ALERT205X
ALERT205X
OrderableALERT2 Transmitter with CR310 Datalogger, AL200X Modem, and VHF Radio
Pricing
Configuration
Sign in for option pricing- w/Canister & 6 inputs w/CELL210 4G LTE CAT1 for Verizon No Data Provisioningogrammed
- w/Enc w/6 Entry Seals No Additional Coms No Data Provisioningogrammed
- w/Enc w/6 Entry Seals w/CELL210 4G LTE CAT1 for Verizon No Data Provisioningogrammed
- w/Paneled Components w/CELL210 4G LTE CAT1 for Verizon No Data Provisioningogrammed
- w/Paneled Components No Additional Coms No Data Provisioningogrammed
- w/Canister & 6 inputs w/Wireless Modem No Data Provisioningogrammed
- w/Enc w/6 Entry Seals w/Wireless Modem No Data Provisioningogrammed
- w/Paneled Components w/Wireless Modem No Data Provisioningogrammed
- w/Canister & 6 inputs No Additional Coms No Data Provisioningogrammed
Select a configuration to add to your quote
- Model:
- ALERT205X
- Item Number:
- 46690
- Warranty:
- 3 yr system/1 yr radio
Overview
The ALERT205X is an advanced ALERT2 transmitter designed for unmatched, long-term deployment reliability in new and existing critical flood monitoring systems. At its core, the AL200X ALERT and ALERT2 Modem and Sensor Interface operates in intelligent network device (IND) mode connected to the tried-and-true CR310 Measurement and Control Datalogger. The ALERT205X offers expanded analog inputs, integrated Wi-Fi or cellular communications options, advanced data logging, and an intuitive web-based user interface for system configuration.
The ALERT205X offers three form factors: canister, enclosure, and panel, ensuring compatibility with diverse installation requirements. In addition, as the heart of any ALERT2 or flood warning installation, the reliable ALERT205X can measure nearly any sensor on the market and provide you with accurate, defensible data necessary for making critical, time-sensitive decisions.
Whether you manage a single watershed or a regional network, the ALERT205X gives you the confidence to make timely, informed decisions. Protect lives, safeguard property, and enhance resilience with the transmitter built to perform when it matters most.
Note: ALERT2 is a trademark of the National Hydrologic Warning Council.
Note: The main image displays the canister, enclosure, and panel options collectively. Each option is sold separately.
Key Advantages
Purpose-built to support long-term flood monitoring
Technical Description
The ALERT205X is a combination of an ALERT2 IND and an application protocol device (APD), which is typically referred to as an ALERT2 transmitter. The ALERT205X is built around a CR310 Measurement and Control Datalogger with optional integrated communications options, an AL200X ALERT and ALERT2 Modem and Sensor Interface, and the industry-standard Maxon VHF radio.
The ALERT205X is available in three different package options to meet your needs:
- The canister option includes six standard, M12, eight-pin, circular connectors for sensor I/O, as well as coaxial connectors for GPS, VHF radio, and optional integrated communications (Wi-Fi and cellular).
- The enclosure option is built around the same platform as the canister option, but it is housed in a fiberglass enclosure with cable glands and internal DIN rail terminals for connecting external sensors.
- The panel option is designed for applications where an enclosure will be provided separately. It includes DIN rail terminals for easy sensor connections.
All three options are configured, deployed, and maintained via the same mobile-friendly user interface. You can view the interface using a PC or mobile device web browser, and you can access the interface via a Wi-Fi, cellular, or USB connection.
Note: The use of a cellular or Wi-Fi connection is not part of the standard offering, and these options incur an additional fee.
Benefits
- Canister, enclosure, or panel configuration to fit any flood warning station
- Remote system monitoring with cellular communications options
- Compatibility with all ALERT2 repeaters, receivers, and base station software packages
- Field configurable through a web-based user interface; no programming required
- Updated M12 canister connectors for easier connection of new and existing sensors
- Additional sensor or external communications cable routing with two spare, sealed cable-entry glands on the canister
- Accommodation for up to a 24 Ah rechargeable battery for unattended use in all conditions
Specifications
- -NOTE-
- For specifications, refer to the AL200X ALERT and ALERT2 Modem and Sensor Interface, CR310 Measurement and Control Datalogger, and 44566 ALERT2 Maxon Radio with User-Specified Frequencies.
- GPS Connector
- SMA
- VHF Antenna Connector
- BNC
- Radio
- Maxon SD-125E V2 VHF Radio 148 to 174 MHz
- Power Input
- 16 to 32 Vdc
(connected to CHG port of CR310)
Canister
- Sensor I/O Connection
- 6x M12 eight-pin
- Power Connector
- MS connector three-pin
- Dimensions
- 20.3 x 20.3 x 57.2 cm
(8.0 x 8.0 x 22.5 in.)
- Weight
- 5.8 kg
(12.8 lb)
Enclosure
- Sensor I/O Connection
- 6x compression fittings, DIN rail terminals
- Power Connector
- Compression fitting, DIN rail terminals
- Dimensions
- 40.6 x 45.7 x 20.3 cm
(16.0 x 18.0 x 8.0 in.)
- Weight
- 7.1 kg
(15.7 lb)
Panel
- Sensor I/O Connection
- DIN rail terminals
- Power Connector
- DIN rail terminals
- Dimensions
- 34.3 x 38.1 x 12.7 cm
(13.5 x 15.0 x 5.0 in.)
The panel is the 18823 Universal Backplate for ENC14/16 Enclosure. Reference that page for drawings. - Weight
- 2.6 kg
(5.8 lb)
Accessories
(16)10072
12 V 24 Ah Battery without Cable
OrderableBP12
12 Ah 12 V Sealed Rechargeable Battery with Mounts
OrderableBP24
24 Ah 12 V Sealed Rechargeable Battery
Orderable31182
27 dBi GPS Antenna with 3 V Magnetic Mount and SMA Connector
Orderable17992
28 dBi 3.3 V active GPS Antenna without Cable
Orderable30626
3/4 in. IPS or GPS Antenna Mounting Stand
Orderable35540
GPS Antenna Kit
Orderable35539
VHF Antenna Kit
Orderable35541
Wi-Fi Antenna Kit
Orderable14204
900 MHz 0 dBd 1/2 Wave Omnidirectional Antenna with RPSMA Connector
Orderable35542
Spread-Spectrum Antenna Kit
Orderable32256
4G/3G Cellular Whip Antenna with SMA Connector
Orderable35544
Cellular Antenna Kit
OrderableALERT2ADM
ALERT2 Administrator (requires LoggerNetADM)
Orderable44328
Field-Wirable, M12, Eight-Pin Plug Connector
Orderable31608
Flat-Bladed Screwdriver, 2 mm Blade x 40 mm Shaft
Orderable
Related Resources
Documents
- Technical Paper
Antenna Selection
May 2026
View Document - Compliance
ALERT200X and ALERT205X FCC Supplier Declaration of Conformity and FCC Statement
View Document - Compliance
ALERT200X and ALERT205X ISED Declaration of Compliance
View Document - Document
Flood Warning | ALERT and ALERT2 Systems
August 2026
View Document
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