CR300
CR300
RetiredMeasurement and Control Datalogger
No longer available to order
This product is retained for service, documentation, and compatibility information.
Replaced by
- CR350
Measurement and Control Datalogger
- Model:
- CR300
- Item Number:
- CR300
- Warranty:
- 3 years
Overview
The CR300 is a multi-purpose, compact measurement and control data logger. This small, low-cost, high-value data logger offers fast communications, low power requirements, built-in USB, and excellent analog input accuracy and resolution. The CR300 can measure most hydrological, meteorological, environmental, and industrial sensors. It concentrates data, makes it available over varied networks, and delivers it using your preferred protocol. It also performs automated on-site or remote decision making for control and M2M communications. The CR300 is ideal for small applications requiring long-term, remote monitoring and control.
The CR300 includes Wi-Fi, cellular, or the following radio options for different regions:
- CR300-RF407: US and Canada
- CR300-RF412: Australia and New Zealand
- CR300-RF422: UK and EU
- CR300-RF427: Brazil
Note: Campbell Scientific does not recommend the CR300 for use as a PakBus router in networks with more than 50 devices. Large arrays or string variables may also reach memory limits. For such applications, a CR1000X Measurement and Control Datalogger is recommended.
Key Advantages
Ideal for small applications
Technical Description
The CR300 is a low-powered data logger designed to measure sensors, analyze data, and store data and programs. A battery-backed clock assures accurate timekeeping. The on-board, BASIC-like programming language—common to all Campbell Scientific data loggers—supports data processing and analysis routines.
The CR300 wiring panel includes a switchable 12 V terminal, and analog grounds dispersed among six analog terminals.
Benefits
- Connects directly to a computer's USB port
- Differentiates even slight changes in data values with higher resolutions measurements (24 bit Adc)
- Provides simple serial sensor integration and measurement with SDI-12 and/or RS-232
- Supports full PakBus networking
- Includes embedded web page for direct connection via web browser
Specifications
- -NOTE-
- Additional specifications are listed in the CR300-Series Specifications Sheet.
- Operating Temperature Range
- -40° to +70°C
(standard)
Non-condensing environment - Maximum Scan Rate
- 10 Hz
- Case Material
- Powder-coated aluminum
- Analog Inputs
- 6 single-ended or 3 differential
(individually configured)
- Pulse Counters
- 8
(P_SW, P_LL, C1, C2, and SE1 to SE4)
- Voltage Excitation Terminals
- 2
(VX1, VX2)
- Communications Ports
- USB Micro BRS-232
- Switched 12 Volt
- 1 terminal
- Digital I/O
- 7 terminals (C1, C2, P_SW, and SE1 to SE4) configurable for digital input and output.
Includes status high/low, pulse width modulation, external interrupt, and communication functions. Exception: The SE4 terminal doesn't do external interrupt.
- Input Limits
- -100 to +2500 mV
- Analog Voltage Accuracy
- Accuracy specifications do not include sensor or measurement noise.±(0.04% of measurement + offset) at 0° to 40°C±(0.1% of measurement + offset) at -40° to +70°C
- ADC
- 24-bit
- Power Requirements
- 16 to 32 Vdc for charger input (CHG)
(Current limited to 0.9 A maximum for power converter or solar panel input.)
10 to 18 Vdc for external batteries (BAT) - Real-Time Clock Accuracy
- ±1 min. per month
- Internet Protocols
- Ethernet, PPP, RNDIS, ICMP/Ping, Auto-IP(APIPA), IPv4, IPv6, UDP, TCP, TLS (v1.2), DNS, DHCP, SLAAC, NTP, Telnet, HTTP(S), FTP(S), SMTP/TLS, POP3/TLS
- Communications Protocols
- PakBus, Modbus, DNP3, SDI-12, TCP, UDP, and others
- CPU Drive/Programs
- 80 MB serial flash
- Data Storage
- 30 MB serial flash
- Idle Current Drain, Average
- 1.5 mA
(@ 12 Vdc)
- Active Current Drain, Average
- 5 mA
(@ 12 Vdc for 1 Hz scan with 1 analog measurement)
23 mA(@ 12 Vdc with processor always on)
- Dimensions
- 13.97 x 7.62 x 4.56 cm
(5.5 x 3.0 x 1.8 in.)
Additional clearance required for cables and leads. - Weight
- 242 to 250 g
(0.53 to 0.55 lb) depending on communication option selected
CR300-RF407 Option
- Radio Type
- Frequency Hopping Spread Spectrum
(FHSS)
- Output Power
- 5 to 250 mW
(user-selectable)
- Frequency
- 902 to 928 MHz
(US, Canada)
- RF Data Rate
- 200 kbps
- Receive Sensitivity
- -101 dBm
- Antenna Connector
- RPSMA
(External antenna required; see www.campbellsci.com/order/rf407 for Campbell Scientific antennas.)
- Idle Current Drain, Average
- 12 mA
(@ 12 Vdc)
- Active Current Drain, Average
- < 80 mA
(@ 12 Vdc)
CR300-RF412 Option
- Radio Type
- Frequency Hopping Spread Spectrum
(FHSS)
- Output Power
- 5 to 250 mW
(user-selectable)
- Frequency
- 915 to 928 MHz
(Australia, New Zealand)
- RF Data Rate
- 200 kbps
- Receive Sensitivity
- -101 dBm
- Antenna Connector
- RPSMA
(External antenna required; see www.campbellsci.com/order/rf412 for Campbell Scientific antennas.)
- Idle Current Drain, Average
- 12 mA
(@ 12 Vdc)
- Active Current Drain, Average
- < 80 mA
(@ 12 Vdc)
CR300-RF422 Option
- Radio Type
- 868 MHz SRD 860 with Listen Before Talk (LBT) and Automatic Frequency Agility (AFA)
- Output Power
- 2 to 25 mW
(user-selectable)
- Frequency
- 863 to 870 MHz
(European Union)
- RF Data Rate
- 10 kbps
- Receive Sensitivity
- -106 dBm
- Antenna Connector
- RPSMA
(External antenna required; see www.campbellsci.com/order/rf422 for Campbell Scientific antennas.)
- Idle Current Drain, Average
- 9.5 mA
- Active Current Drain, Average
- 20 mA
CR300-RF427 Option
- Radio Type
- Frequency Hopping Spread Spectrum
(FHSS)
- Output Power
- 5 to 250 mW
(user-selectable)
- Frequency
- 902 to 907.5 MHz/915 to 928 MHz
(Brazil)
- RF Data Rate
- 200 kbps
- Receive Sensitivity
- –101 dBm
- Antenna Connector
- RPSMA
(External antenna required.)
- Idle Current Drain, Average
- 12 mA
(@ 12 Vdc)
- Active Current Drain, Average
- < 80 mA
(@ 12 Vdc)
CR300-WIFI Option
- Operational Modes
- Client or Access Point
- Operating Frequency
- 2.4 GHz, 20 MHz bandwidth
- Antenna Connector
- Reverse Polarity SMA
(RPSMA)
- Antenna
- pn 16005 unity gain (0 dBd), 1/2 wave whip, omnidirectional with articulating knuckle joint for vertical or horizontal orientation
- Transmit Power
- 7 to 18 dBm
(5 to 63 mW)
CR300-CELL205 Option
- -NOTE-
- The CR300-CELL205 option is not compatible with a Verizon cellular network.
- Certifications
- IC (Industry Canada)
10224A-201611EC21A
- Cell Technologies
- 3G
(UMTS/HSPA+)
4G(LTE CAT-1)
- 3G Frequency Bands
- 850, 1700/2100 (AWS), and 1900
- 4G Frequency Bands
- 700, 850, 1700/2100 (AWS-1), 1900
- Antenna Connector
- SMA
(External antenna required; see www.campbellsci.com/order/cr300 for Campbell Scientific antennas.)
- SIM Interface
- 3FF (6 position/contacts)
Supports SIMs that require 1.8 or 3 V. - Radio Output Power
- 23 dBm on LTE24 dBm on UMTS27 dBm on EDGE33 dBm on GSM
- Radio Sensitivity Range
- -99.5 to 110.5 dBm
(10 M)
CR300-CELL210 Option
- -NOTE-
- The CR300-CELL210 option is only compatible with a Verizon cellular network.
- Cell Technologies
- 4G
(LTE CAT-1)
- 4G Frequency Bands
- 700, 850, 1700, 1900, 2100
- Antenna Connector
- SMA
(External antenna required; see www.campbellsci.com/order/cr300 for Campbell Scientific antennas.)
- Power Consumption - Low Power Mode
- 5 mA
- Power Consumption - Idle
- 35 mA
- Power Consumption - Active
- 70 mA
- SIM Interface
- 3FF (6 position/contacts)
Supports SIMs that require 1.8 or 3 V. - Radio Output Power
- 23 dBm on LTE
- Radio Sensitivity Range
- -99.5 to 110.5 dBm
(10 M)
CR300-CELL215 Option
- -NOTE-
- The CR300-CELL215 option is intended for use in EMEA countries.
- Cell Technologies
- 2G
(GSM/GPRS/EDGE)
3G(UMTS/HSPA+)
4G(LTE CAT-1)
- 2G Frequency Bands
- 900 and 1800 MHz
- 3G Frequency Bands
- 850, 900, and 2100 MHz
- 4G Frequency Bands
- 800, 850, 900, 1800, 2100, and 2600 MHz
- Antenna Connector
- SMA
(External antenna required; see www.campbellsci.com/order/cr300 for Campbell Scientific antennas.)
- SIM Interface
- 3FF (6 position/contacts)
Supports SIMs that require 1.8 or 3 V. - Radio Output Power
- 23 dBm on LTE24 dBm on UMTS27 dBm on EDGE33 dBm on GSM
- Radio Sensitivity Range
- -99.5 to 110.5 dBm
(10 M)
CR300-CELL220 Option
- -NOTE-
- The CR300-CELL220 option is intended for use in Australia and New Zealand.
- Cell Technologies
- 3G
(UMTS/HSPA+)
4G(LTE CAT-1)
- 3G Frequency Bands
- 850 and 2100 MHz
(EC-21AUT)
850, 900, 1900, and 2100 MHz(EC-21AU)
- 4G Frequency Bands
- 700, 850, 1800, 2100, and 2600 MHz
(EC-21AUT)
700, 900, 1700, 1800, 1900, 2100, and 2600 MHz(EC-21AU)
- Antenna Connector
- SMA
(External antenna required; see www.campbellsci.com/order/cr300 for Campbell Scientific antennas.)
- SIM Interface
- 3FF (6 position/contacts)
Supports SIMs that require 1.8 or 3 V. - Radio Output Power
- 23 dBm on LTE24 dBm on UMTS
- Radio Sensitivity Range
- -99.5 to 110.5 dBm
(10 M)
CR300-CELL225 Option
- -NOTE-
- The CR300-CELL225 option is intended for use in Japan.
- Cell Technologies
- 4G
(LTE CAT-1)
- 4G Frequency Bands
- 800 (lower), 800 (upper), 850+, 900, 1800, and 2100 MHz
- Antenna Connector
- SMA
(External antenna required; see www.campbellsci.com/order/cr300 for Campbell Scientific antennas.)
- SIM Interface
- 3FF (6 position/contacts)
Supports SIMs that require 1.8 or 3 V. - Radio Output Power
- 23 dBm on LTE
- Radio Sensitivity Range
- -99.5 to 110.5 dBm
(10 M)
Accessories
(16)CELLDATA
Campbell Scientific Cellular Data Service Subscription
Orderable32256
4G/3G Cellular Whip Antenna with SMA Connector
Orderable32262
2 dBd 4G/3G Multiband Omnidirectional Antenna with Mounting Hardware
Orderable14204
900 MHz 0 dBd 1/2 Wave Omnidirectional Antenna with RPSMA Connector
Orderable14221
900 MHz 3 dBd Omnidirectional Antenna with Mounting Hardware
Orderable14201
900 MHz 9 dBd Yagi Antenna with Mounting Hardware
Orderable38485
4G/3G 9 dBi MIMO Cellular Antenna with 2 Type N Socket Connectors
Orderable15730
900 MHz 0 dBd 1/4 Wave Omnidirectional Antenna with RPSMA Connector
Limited availability15731
900 MHz 0 dBd 1/4 Wave Omnidirectional Antenna with RPSMA Connector
Limited availability17480
Tri-Band 1 dBd Omnidirectional Antenna with RPSMA Connector and Adhesive Mount
Limited availability30411
2.4 GHz 5.8 dBd Omnidirectional Fiberglass Antenna without Mounting Hardware
Orderable16755
2.4 GHz 13 dBd Yagi Enclosed Antenna with Mounting Hardware
Orderable27373
14 to 28 AWG 5-Position Terminal Connector with Lever Nut
Orderable10873
Serial Data Cable, 9-Pin Socket (Female) to 9-Pin Pin (Male)
Orderable18663
Null Modem Cable, 9-Pin PIn (Male) to 9-Pin Pin (Male)
Orderable39177
1.67 A 24 Vdc Power Supply
Orderable
Common Accessories
(21)CELLDATA
Campbell Scientific Cellular Data Service Subscription
At Campbell Scientific, we offer subscriptions to cellular data plans to be used with our RV50 modems, the cellular modems built into our CR300 and CR310 dataloggers, and our CELL200-series cellular modules (CELL205, CELL210, CELL215, CELL220, CELL225). Modems are provisioned and activated when you receive them. A subscription to cellular data service is available to those who purchase cellular-enabled devices. When ordering a cellular-enabled product, you can choose the Data Provisioning option to subscribe to Campbell Scientific Cellular Data Services. By doing so, the modem will be provisioned and activated to work on a selected carrier. When ordering a provisioned device, also choose a data plan. The annual subscription cost is based on the data plan and selected carrier. Data plans are available from 25 MB per month to 5 GB per month.
Orderable18663
Null Modem Cable, 9-Pin PIn (Male) to 9-Pin Pin (Male)
This cable is most commonly used to connect a communication peripheral, such as a cellular gateway or radio, to the data logger’s 9-pin RS-232 port. This 1 ft, null modem cable has 9-pin male connectors on both ends for connecting the data logger to another DCE serial device.
OrderableENC8/10
Weather-Resistant Enclosure, 8 x 10 inches
The ENC8/10 is a weather-resistant enclosure that is 8 inches wide and 10 inches tall. It is the smallest of our standard enclosures, yet it is extra deep with a depth of 6 inches. This enclosure is suitable for use with CR310 dataloggers. The ENC8/10 can house one of these data loggers and a small power supply.
OrderableALK7
7 Ah 12 V Alkaline Battery Pack (requires 8 D cell batteries)
The ALK7 is suitable for powering the data logger through the BAT input when used in low-current-drain systems that can be visited periodically so the batteries can be replaced. The ALK7 is not rechargeable and damage could occur if a solar panel or power supply is connected to the CHG input on the data logger at the same time.
Note: The ALK7 does not ship with the required 8 D cell batteries. The batteries must be ordered separately or supplied by the user.OrderableBP7
7 Ah 12 V Sealed Rechargeable Battery
The BP7 is a rechargeable, 12V, 7 Ah battery suitable for low-current-drain systems and systems that will use a solar panel or power supply connected to the CHG input of the data logger. This battery is typically recharged with a panel or wall charger.
Orderable30411
2.4 GHz 5.8 dBd Omnidirectional Fiberglass Antenna without Mounting Hardware
The 30411 is one antenna option for use with Wi-Fi. The 30411 is a 5.8 dBd omnidirectional antenna for use with our 2.4 GHz spread-spectrum products. The 30411 is suitable for base-station use where communication is needed with multiple stations located in different directions. It is also preferred in mobile applications and in other applications in which the best radio path is not constant, including close-up applications without clear line of sight. Mounting hardware is not included.
Orderable16755
2.4 GHz 13 dBd Yagi Enclosed Antenna with Mounting Hardware
The 16755 is one antenna option suitable for use with Wi-Fi. The 16755 is a high-gain (13 dBd), directional (Yagi) antenna used with our 2.4 GHz radio transceivers. It is intended for longer distances, and for communicating to one other station (due to narrow beam width).
Orderable15730
900 MHz 0 dBd 1/4 Wave Omnidirectional Antenna with RPSMA Connector
This antenna is suitable for use with the -RF and -WIFI options.
One of three antenna options for use with 900 MHz radios.The 15730 is a 900 MHz, unity gain (0 dBd), 1/4 wave whip, right-angle antenna. The 15730 is an omnidirectional antenna that attaches directly to the product (no cables). It should be used inside an enclosure or building.Limited availability14201
900 MHz 9 dBd Yagi Antenna with Mounting Hardware
One antenna option for use with 900 MHz radios. The 14201 is a high-gain (9 dBd), directional (Yagi) antenna. It is useful for making RF links over longer distances in one direction. This antenna is typically used with sub-315 mW radios such as the RF407. The 14201 requires an antenna cable to connect it to the spread-spectrum transceiver.
Orderable14221
900 MHz 3 dBd Omnidirectional Antenna with Mounting Hardware
One antenna option for use with 900 MHz radios. The 14221 is a 3 dBd omnidirectional antenna. The 14221 is suitable for base station use where you need to communicate with multiple stations located in different directions. It is also preferred in mobile applications and in other applications in which the best radio path is not constant, including close-up applications without clear line-of-sight.
Orderable38485
4G/3G 9 dBi MIMO Cellular Antenna with 2 Type N Socket Connectors
The 38485 antenna is a wideband, dual-port, directional-panel antenna with slant 45 polarization that covers US LTE700/Cellular/PCS/AWS/MDS and global GSM900/GSM1800/UMTS/LTE2600 bands. The antenna is ideal for both indoor and outdoor applications. It includes a UV-stable radome enclosure that provides years of use without degradation to either mechanical properties or aesthetics.
Orderable32256
4G/3G Cellular Whip Antenna with SMA Connector
This antenna is suitable for use with the -CELL options.
One of three antenna options is needed for the -CELL options: 32256, 32262, or 31128.
The 32256 is a wide-band termination antenna with an SMA connector and articulating base. It has a high-efficiency response on nearly all 4G, 3G, and 2G frequency bands. This small, low-cost antenna is typically used in applications where antenna gain is not required to maintain a strong cellular link.Orderable32262
2 dBd 4G/3G Multiband Omnidirectional Antenna with Mounting Hardware
This antenna is suitable for use with the -CELL options.
One of three antenna options is needed for the -CELL options: 32256, 32262, or 31128.
The 32262 is an omnidirectional antenna with mounting bracket that is ideally suited for use with 4G and 3G cellular devices. The mounting bracket attaches to a mast or crossarm, and it serves as the antenna ground plane. The antenna has an N type (female) threaded permanent stud for easy mounting to the included bracket or through an enclosure wall. An antenna cable, purchased separately, is required.Orderable21847
Cellular Phone Antenna Cable, Type N Pin (Male) to SMA
This cable is suitable for use with the -CELL options.
The 21847 is used with non-whip cellular antennas. The 21847 is a 12 ft LMR195 coaxial cable fitted with a Type N pin (male) connector on one end and an SMA connector on the other end.OrderableCOAXRPSMA
LMR195 Antenna Cable with Reverse Polarity SMA and Type N Pin (Male) Connector
This cable is suitable for use with the -RF and -WIFI options.
One of three cable options is needed per each non-whip antenna. The COAXRPSMA is an LMR195 coaxial cable fitted with a Type N pin (male) connector on one end and a Reverse Polarity SMA (RPSMA) pin (male) connector on the other end. This cable is commonly used to connect an antenna with Type N connector directly to the data logger’s radio connector.OrderableCOAXSMA
LMR195 Antenna Cable with SMA and Type N Pin (Male) Connector
This cable is suitable for use with the -CELL options.
One of three cable options is needed per each non-whip antenna.The COAXSMA is an LMR195 coaxial cable fitted with a Type N pin (male) connector on one end and an SMA connector on the other end. This cable is commonly used to connect an antenna with Type N connector directly to a cellular device with an SMA connector.OrderableCOAXNTN
RG8 Antenna Cable with 2 Type N Pin (Male) Connectors
One of three cable options is needed per each non-whip antenna. The COAXNTN-L consists of an RG8/U, low-loss coaxial cable fitted with a Type N pin (male) connector on each end. This cable is used when a surge protection kit or Type N bulkhead connector is placed between the antenna and the data logger.
Orderable31314
Surge Protection Kit, Type N to RPSMA, 700 to 2700 MHz
This accessory is suitable for use with the -RF and -WIFI options.
The 31314 is used with the COAXNTN-L and is suitable for all of the data logger radio options. The 31314 is an RF surge protection kit with flange mounting bracket. It may be flange-mounted to an enclosure backplate or bulkhead-mounted through an enclosure wall. One side of the surge protector connects to a radio with an RPSMA antenna connection. The other side connects to an antenna/antenna coaxial cable with Type N connector.Orderable31317
Surge Protection Kit, Type N to SMA, 700 to 2700 MHz
This accessory is suitable for use with the -CELL options.
The 31317 is an RF surge protection kit with flange mounting bracket. It may be flange-mounted to an enclosure backplate or bulkhead-mounted through an enclosure wall. One side of the surge protector connects to a radio with an SMA antenna connection. The other side connects to an antenna/antenna coaxial cable with Type N connector.Orderable21212
Black Cold Shrink Tape
The 21212 is used to seal exposed RF connections. The 21212 is a 10-ft roll of black self-vulcanizing tape.
Orderable39177
1.67 A 24 Vdc Power Supply
The 39177 converts 100 to 240 Vac to a regulated 24 Vdc. The 39177 comes standard with a USA/Canada plug, with an option to add a kit for international use. On one end, the 39177 has a plug that inserts into a wall socket. There are several cable termination options for the other end of the cable.
Orderable
Other Accessories
(5)27373
14 to 28 AWG 5-Position Terminal Connector with Lever Nut
The 27373 facilitates connecting multiple wires into the same terminal, such as for SDI-12.
Orderable10873
Serial Data Cable, 9-Pin Socket (Female) to 9-Pin Pin (Male)
The 10873 is a serial cable that is useful for connecting the RS-232 port of the data logger to the 9-pin RS-232 port of a computer. The cable is six feet long.
Orderable15731
900 MHz 0 dBd 1/4 Wave Omnidirectional Antenna with RPSMA Connector
This antenna is suitable for use with the -RF and -WIFI options.
The 15731 is a 0 dBd gain 1/4 wave helical antenna with an RPSMA connector designed for use with radios operating at 900 to 935 MHz. This small, low-cost antenna is typically used in applications where space is constrained and antenna gain is not required to maintain a strong RF link.Limited availability14204
900 MHz 0 dBd 1/2 Wave Omnidirectional Antenna with RPSMA Connector
This antenna is suitable for use with the -RF and -WIFI options.
The 14204 is a 0 dBd gain 1/2 wave antenna with an RPSMA (reverse polarity SMA) connector and articulating base. It is designed for use with radios operating at 900 to 930 MHz. This small, low-cost antenna is typically used in applications where space is constrained and antenna gain is not required to maintain a strong RF link.Orderable17480
Tri-Band 1 dBd Omnidirectional Antenna with RPSMA Connector and Adhesive Mount
This antenna is suitable for use with the -RF and -WIFI options.
The 17480 is a 1 dBd gain 1/2 wave antenna with RPSMA connector designed for use with radios operating in one or more of the following bands: 824 to 960 MHz, 1.71 to 1.99 GHz, and 2.40 to 2.48 GHz. It can be used with one of the data logger RF4XX or WIFI radio options. This low-cost antenna is typically used in applications where it is advantageous to locate the antenna a small distance away from the radio, but high antenna gain is not required to maintain a strong RF link.Limited availability
Replacement Parts
(6)15598
3 V Coin Cell Lithium Battery CR2025
The 15598 is a 3 V coin cell CR2025 lithium battery that is included inside each CR300-series datalogger. The 15598 powers the clock and SRAM when the primary 12 Vdc power supply is not connected. The 15598 needs to be periodically replaced. Campbell Scientific recommends replacing the battery every five years.
Orderable505
Screw #6-32 x .375 Pan Phillips
These screws, along with the 6044 grommets, are commonly used together to secure our equipment to the backplates of our enclosures.
Orderable6044
Grommet for #6 or #8 Screw
These grommets are commonly used with the 505 screws to secure our equipment to the backplates of our enclosures.
Orderable27555
USB 2.0 Cable, Type A Pin (Male) to Micro B Pin (Male), 6/6.5 ft
The 27555 is a USB Type A to Micro B, pin (male)-to-pin (male) cable, 6 to 6.5 ft long. It connects devices using the Micro B interface to a USB port on a computer.
Orderable3315
Type T Thermocouple
This type T, 5 in. thermocouple is attached to a differential channel on our CR300 datalogger wiring panels when the data logger is shipped.
Orderable16005
2.4 GHz 0 dBd Omnidirectional 1/2 Wave Whip Antenna
The 16005 ships with the -WIFI version of the CR300. The 16005 is a unity gain (0 dBd), 1/2 wave whip, omnidrectional antenna that can be used with our 2.4 GHz radio products with RPSMA antenna connectors. It features an articulating knuckle joint for easy orientation, weatherized jacket for outdoor applications, and internal counterpoise for ground plane independence.
Orderable
Ships With
(7)- QuickStart URL card
505
Screw #6-32 x .375 Pan Phillips
OrderableQty 36044
Grommet for #6 or #8 Screw
OrderableQty 327555
USB 2.0 Cable, Type A Pin (Male) to Micro B Pin (Male), 6/6.5 ft
Orderable3315
Type T Thermocouple
Orderable16005
2.4 GHz 0 dBd Omnidirectional 1/2 Wave Whip Antenna
Orderable7363
Enclosure Supply Kit, Standard Size
Orderable
Compatibility
Sensors
With several channel types, the CR300 is compatible with nearly every available sensor. This includes analog output voltage (0 to 2.5 V) and current (0 to 20 mA or 4 to 20 mA) sensors, thermistors, and RTDs to name a few. It is also compatible with pulse or frequency output sensors such as anemometers, rain gauges, and flow meters. CR300 dataloggers are not capable of applying reverse excitation, and they cannot be used with some conductivity or soil matric potential sensors.
SDI-12, Modbus, and other serial sensors are supported with the RS-232 port and C1 and C2 as a Tx/Rx pair. The CR300 does not directly support RS-485 sensors.
Measurement & Control Peripherals
The CR300 is compatible with low current and voltage solid-state relays but not with SDM or CDM devices.
Software
The CR300 series is compatible with CRBasic (version 3.6 or higher).
Enclosures
An ENC10/12 or ENC12/14 enclosure is adequate for most CR300-based systems.
Communications
The CR300 can communicate with a PC directly via its USB port. Compatible telemetry devices include our RS-485 converters, digital cellular gateways, RF telemetry, and satellite transmitters (HDR GOES, Argos, Meteosat, Iridium, and Inmarsat). Data can be viewed on an iOS or Android device (requires our free LoggerLink app), CD295 DataView II Display, or other third-party devices.
| Data Logger Option | Communications Type | Integrated Communications Are Compatible with |
|
CR300-WIFI |
2.4 GHz, 20 MHz bandwidth |
Most other Wi-Fi devices, such as the CR310-WIFI, CR6-WIFI, NL240 |
|
CR300-RF407 |
902 to 928 MHz Frequency Hopping Spread Spectrum |
|
|
CR300-RF412 |
915 to 928 MHz Frequency Hopping Spread Spectrum |
|
|
CR300-RF422 |
868 MHz SRD860 LBT+AFA |
|
|
CR300-CELL |
2G Frequency Bands 850, 900, 1800, 1900 |
GSM/GPRS/EDGE (2G) |
Power
The CR300 uses an external power source and has a built-in charger/regulator. Intelligent power sourcing autoselects the highest voltage from three input sources (CHG, BAT, or USB) to operate in one of the following four modes:
- UPS (recommended) - A 16 to 32 Vdc source, solar panel (SP10, SP20), or power converter (29796) is used to charge a 12 Vdc battery, such as our BP7 or BP12.
- 12 Vdc battery or other reliable 12 Vdc source
- Charge only - DC power supply (16 to 32 Vdc)
- USB - Powered over 5 Vdc USB port for setup, programming, and testing (will not charge battery or boost USB power to provide 12 Vdc to the switched battery terminal SW12)
Compatible Products
(6)LoggerNet
Data Logger Support Software
OrderableNotesVersion 4.4 or higher
DevConfig
Device Configuration Utility
OrderableNotesVersion 2.12 or higher
PC400
Datalogger Support Software
OrderableNotesVersion 4.4 or higher
Short Cut
Program Generator for Windows (SCWin)
OrderableNotesVersion 3.2 or higher
LoggerLink
Mobile Apps for iOS and Android
OrderableNotesVersion 1.5 or higher
LoggerNet Mobile Connect
Apps for iOS and Android
OrderableNotesVersion 1.1 or higher
Incompatible Products
(1)Related Resources
Case Studies

South Dakota: Rock-Melt Monitoring
Monitoring research using resistive heater to seal boreholes
South Dakota, USA
July 18, 2018
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Wyoming: Landslide Warning
Landslide warning system
Northeastern Wyoming, USA
March 2, 2018
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Ontario: Road Weather Network
Adding stations to RWIS in sparsely populated area
Ontario, Canada
July 9, 2019
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Canada: Structural Health Monitoring of an Overpass
Canada
May 6, 2020
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- Manual
CR300 Series Product Manual (PDF)
September 2026
View Document - Manual
CR300 Series Getting Started Guide (PDF)
June 2023
View Document - Technical Paper
Data Streaming
July 2023
View Document - Brochure
CR300-Series Specifications Sheet
May 2026
View Document
Showing 4 of 36 results
See all DocumentsDownloads
- Software ApplicationsCR300 QuickStart Program
March 15, 2016
The CRBasic program referenced in the CR300 QuickStart videos and manual.
- OS and FirmwareCR300 Series OSv11.03.00
December 23, 2025
This download is for the CR300 series of dataloggers including all CR300 and CR310 models. Execution of this download places the Operating System file(.obj) on your computer. It also updates the CRBasic Editor compiler and support files. Why Update? This OS has general bug fixes. See the revision history for a complete list. With this OS update, it is recommended that you also update the Device Configuration Utility to the most recent version so that new datalogger features are available in the utility. Note/Warning: Campbell Scientific always recommends updating operating systems on site if possible. When remote updates are required, it is recommended that you implement the necessary precautions to handle unexpected OS upload complications. All datalogger settings should be retained when updated remotely. If you choose to roll back to a previous operating system, the datalogger settings will be reset to default. Watch the Video Tutorial: Sending an OS to a Local Datalogger.
- OS and FirmwareCR300 Series Wifi OS Updatev1.7.12
January 1, 1990
Manufacturer chipset maintenance update.
- Software ApplicationsData Logger Wiring Excel Template
March 26, 2024
This is a data logger wiring diagram spreadsheet template that accompanies the Wiring Diagram Video. The spreadsheet includes templates for CR6, CR1000X, CR300, CR310, and CR350 data loggers. The file is an Excel template and works best with Microsoft Excel.
Videos and Tutorials

LoggerLink Software | An Introduction
January 29, 2013 (12:11)
A mobile app for iOS and Android
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LoggerNet Software | Network Planner
April 16, 2013 (4:05)
Designing a PakBus™ network using the Network Planner tool in LoggerNet
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Toolbox for Installation and Maintenance
November 5, 2013 (2:21)
Helpful toolbox items for use in the field
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SDI-12 Sensors | Transparent Mode
November 27, 2013 (7:06)
Communicating with an SDI-12 sensor
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Services Available
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