ALERT205
ALERT205
Limited availabilityConfigurableALERT2 Transmitter with CR310 Datalogger, AL200 Modem, and VHF Radio
The ALERT205 is the only ALERT2 transmitter with an easy-to-use, browser-based user interface.
Pricing
Configuration
Sign in for option pricing- w/Canister & 6 inputs w/CELL205 4G LTE CAT1 AT&T North AmericaVHF
- w/Canister & 6 inputs w/CELL205 4G LTE CAT1 Bell Canada Static IPVHF
- w/Canister & 6 inputs w/CELL205 4G LTE CAT1 International 1AVHF
- w/Canister & 6 inputs w/CELL205 4G LTE CAT1 International 1BVHF
- w/Canister & 6 inputs w/CELL205 4G LTE CAT1 No Data ProvisioningVHF
- w/Canister & 6 inputs w/CELL210 4G LTE CAT1 for Verizon No Data ProvisioningVHF
- w/Canister & 6 inputs w/CELL205 4G LTE CAT1 T-Mobile USVHF
- w/Canister & 6 inputs w/CELL210 4G LTE CAT1 for Verizon Verizon USVHF
- w/Canister & 6 inputs w/CELL210 4G LTE CAT1 for Verizon Verizon US Static IPVHF
- w/Canister & 6 inputs No Additional Coms No Data ProvisioningVHF
- w/Canister & 6 inputs w/900MHz Radio No Data ProvisioningVHF
- w/Canister & 6 inputs w/Wireless Modem No Data ProvisioningVHF
- w/Enc w/6 Entry Seals w/CELL205 4G LTE CAT1 AT&T North AmericaVHF
- w/Enc w/6 Entry Seals w/CELL205 4G LTE CAT1 Bell Canada Static IPVHF
- w/Enc w/6 Entry Seals w/CELL205 4G LTE CAT1 International 1AVHF
- w/Enc w/6 Entry Seals w/CELL205 4G LTE CAT1 International 1BVHF
- w/Enc w/6 Entry Seals w/CELL205 4G LTE CAT1 No Data ProvisioningVHF
- w/Enc w/6 Entry Seals w/CELL210 4G LTE CAT1 for Verizon No Data ProvisioningVHF
- w/Enc w/6 Entry Seals w/CELL205 4G LTE CAT1 T-Mobile USVHF
- w/Enc w/6 Entry Seals w/CELL210 4G LTE CAT1 for Verizon Verizon USVHF
- w/Enc w/6 Entry Seals w/CELL210 4G LTE CAT1 for Verizon Verizon US Static IPVHF
- w/Enc w/6 Entry Seals No Additional Coms No Data ProvisioningVHF
- w/Enc w/6 Entry Seals w/900MHz Radio No Data ProvisioningVHF
- w/Enc w/6 Entry Seals w/Wireless Modem No Data ProvisioningVHF
- w/Paneled Components w/CELL205 4G LTE CAT1 AT&T North AmericaVHF
- w/Paneled Components w/CELL205 4G LTE CAT1 Bell Canada Static IPVHF
- w/Paneled Components w/CELL205 4G LTE CAT1 International 1AVHF
- w/Paneled Components w/CELL205 4G LTE CAT1 International 1BVHF
- w/Paneled Components w/CELL205 4G LTE CAT1 No Data ProvisioningVHF
- w/Paneled Components w/CELL210 4G LTE CAT1 for Verizon No Data ProvisioningVHF
- w/Paneled Components w/CELL205 4G LTE CAT1 T-Mobile USVHF
- w/Paneled Components w/CELL210 4G LTE CAT1 for Verizon Verizon USVHF
- w/Paneled Components w/CELL210 4G LTE CAT1 for Verizon Verizon US Static IPVHF
- w/Paneled Components No Additional Coms No Data ProvisioningVHF
- w/Paneled Components w/900MHz Radio No Data ProvisioningVHF
- w/Paneled Components w/Wireless Modem No Data ProvisioningVHF
Select a configuration to add to your quote
- Model:
- ALERT205
- Item Number:
- 44841
- Warranty:
- 1 year
- Lead time:
- 14 days
Overview
The ALERT205 is the easiest ALERT2 transmitter to use on the market, and its additional communications options and variety of form factors make it flexible to fit the needs of your application. The ALERT205 is available in canister, enclosure, and backplate form factors—offering you a variety of compatible installation methods. In addition, as the heart of any ALERT2 or flood warning installation, the reliable ALERT205 can measure nearly any sensor on the market and provide you with accurate, defensible data necessary for making critical, time-sensitive decisions.
To configure and deploy the ALERT205, simply use the easy-to-use, browser-based interface that is hosted by the transmitter. This eliminates the need for you to install and maintain PC-based software. You can also connect the ALERT205 to your mobile devices.
Note: The main image displays the backplate, canister, and enclosure options collectively. Each option is sold separately.
Key Advantages
Offering various form factors to fit a variety of applications
Technical Description
The ALERT205 is a combination of an ALERT2 intelligent network device (IND) and an application protocol device (APD)—typically referred to as an ALERT2 transmitter. The ALERT205 is built around a CR310 datalogger with optional integrated communications options, an AL200 ALERT2 encoder, and the industry standard Maxon VHF radio.
The ALERT205 is available in three different package options to meet your needs:
- The canister option includes six standard circular connectors for sensor I/O, as well as coax connectors for GPS, VHF radio, and optional integrated communications (Wi-Fi, spread spectrum, cellular).
- The enclosure option is built around the same platform as the canister option, but it is housed in a polycarbonate enclosure with cable glands and screw terminals for connecting external sensors.
- The backplate version is designed for applications where an enclosure will be provided, and 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
- Available as a standard ALERT-style canister, an enclosure, or mounted to a backplate for cost effectiveness
- Available with Wi-Fi, spread-spectrum radio, or cellular communications options
- Compatible with all ALERT2 repeaters, receivers, and base station software packages
Specifications
- -NOTE-
- For specifications, refer to:
AL200 ALERT2 Encoder, Modulator, and Sensor InterfaceCR310 Measurement and Control DataloggerMaxon SD125E
- Dimensions for Canister Option
- 22.86 x 22.86 x 20.32 cm
(9 x 9 x 8 in.)
- Dimensions for Backplate Option
- 40.64 x 35.56 x 15.24 cm
(16 x 14 x 6 in.)
- Dimensions for Enclosure Option
- 20.32 x 25.4 x 10.16 cm
(8 x 10 x 4 in.)
- Weight
- 242 to 250 g
(0.53 to 0.55 lb) for the CR310, depending on the communication option selected
Accessories
(16)8054
12 V 12 Ah Battery without Cable
Orderable31182
27 dBi GPS Antenna with 3 V Magnetic Mount and SMA Connector
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
OrderableALERTCBL3
ALERT Power Cable
OrderableALERTCBL4
ALERT Analog 2 Cable
OrderableALERTCBL4R
ALERT Analog 1 Cable
OrderableALERTCBL5
ALERT Precipitation Cable
OrderableALERTCBL5R
ALERT Digital Cable
OrderableALERTCBL6
ALERT Wind Cable
OrderableALERTCBL6R
ALERT Temperature and RH Cable
Orderable
Related Resources
Documents
- Manual
ALERT205 ALERT2 Transmitter Getting Started Guide
December 2024
View Document - Technical Paper
Antenna Selection
May 2026
View Document - Compliance
ALERT205-P (Panel) FCC Supplier Declaration of Conformity
August 2019
View Document - Compliance
ALERT205-C (Canister) FCC Supplier Declaration of Conformity
August 2019
View Document - View all documents
Videos and Tutorials

ALERT205 Part 4: Diagnostics
May 8, 2020 (3:46)
Using the ALERT205 Diagnostics tab
Watch
ALERT205 Part 3: Dashboard
May 8, 2020 (2:25)
Using the Dashboard and Monitor Data tabs
Watch
ALERT205 Part 2: Configuration
May 8, 2020 (5:23)
Configuring the ALERT205
Watch
Getting the Best RF Signal: Antenna Gain, dB, Line of Sight, and Testing
March 12, 2026 (9:12)
Choosing the right radios and antenna for a strong radio signal.
Watch- View all videos and tutorials