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 Provisioning46690-C-CELL210-NP
- w/Enc w/6 Entry Seals No Additional Coms No Data Provisioning46690-E-NA-NP
- w/Enc w/6 Entry Seals w/CELL210 4G LTE CAT1 for Verizon No Data Provisioning46690-E-CELL210-NP
- w/Paneled Components w/CELL210 4G LTE CAT1 for Verizon No Data Provisioning46690-P-CELL210-NP
- w/Paneled Components No Additional Coms No Data Provisioning46690-P-NA-NP
- w/Canister & 6 inputs w/Wireless Modem No Data Provisioning46690-C-WIFI-NP
- w/Enc w/6 Entry Seals w/Wireless Modem No Data Provisioning46690-E-WIFI-NP
- w/Paneled Components w/Wireless Modem No Data Provisioning46690-P-WIFI-NP
- w/Canister & 6 inputs No Additional Coms No Data Provisioning46690-C-NA-NP
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
Common Accessories
(21)8054
12 V 12 Ah Battery without Cable
The 8054 is a rechargeable, 12 V, 12 Ah battery that can power an ALERT system.
Orderable10072
12 V 24 Ah Battery without Cable
The 10072 is a rechargeable, 12 V, 24 Ah battery that can power an ALERT system. Note: This is only needed for the canister version.
OrderableBP12
12 Ah 12 V Sealed Rechargeable Battery with Mounts
The BP12 is a rechargeable, 12 V, 12 Ah battery pack that can power a Campbell Scientific system that has components that have above-average power requirements, such as satellite transmitters. Note: This is only needed for the panel and enclosure versions.
OrderableBP24
24 Ah 12 V Sealed Rechargeable Battery
The BP24 is a rechargeable 12 Vdc, 24 Ah battery pack that can power a Campbell Scientific system. It is intended for high-current-drain systems, such as satellite transmitters, that require more power. Note: This is only needed for the panel and enclosure versions.
OrderableSP10
10 W Solar Panel
The SP10 is a 10-W photovoltaic power sources capable of recharging batteries. Its 6.1 m (20 ft) cable has stripped and tinned leads that connect to the PS150, PS200, CH150, CH200, or battery base of the CRVW3, CR3000, CR5000, CR7, CR9000X, or CR6. The SP10 has a sufficient charging source for many of our system configurations in tropical to temperate latitudes. It allows unattended operation of systems in remote locations, far from AC electrical sources.
OrderableSP20
20 W Solar Panel
The SP20 is a 20 W solar panel. It is often used for system configurations that have higher-than-average power requirements, or in higher elevation and latitude locations. It connects to Campbell Scientific power supplies and battery bases to recharge the battery, and it allows unattended operation of systems in remote locations that are far from ac electrical sources.
OrderableCH150
12 V Charging Regulator
The CH150 is a charging regulator for an external rechargeable 12 V VRLA (valve-regulated lead-acid) battery, such as the BP12 or BP24 offered by Campbell Scientific. Charging power for the CH150 is typically supplied by an unregulated solar panel, AC/AC transformer, or AC/DC converter. The CH150 provides charging with temperature compensation for optimal charging and battery life. A maximum power point tracking algorithm is incorporated for solar inputs to maximize available solar charging resources.
OrderableCH201
12 V Charging Regulator
The CH201 is a microcontroller-based smart charge controller that is ideal for charging 12 Vdc VRLA batteries. The charger uses MPPT (maximum power point tracking) technology to safely manage amperage and voltage for optimal battery charging and longevity. It has dual inputs for use with a solar panel and/or any 15 to 50 Vdc charging source. The dual inputs provide the option for fail-safe charging. The CH201 also outputs various parameters to allow close monitoring of the battery and power usage via RS-232 or SDI-12.
OrderableALERTCBL3
ALERT Power Cable
The ALERTCBL3 is an ALERT system power cable.
OrderableCABLEPCBL
2-Conductor 16 AWG Power Cable
The CABLEPCBL is a 16 AWG, two-conductor cable with a Santoprene jacket. The conductors are stripped and tinned. This generic cable is used to power remote peripherals.
Orderable44328
Field-Wirable, M12, Eight-Pin Plug Connector
The 44328 Field-Wirable, M12, Eight-Pin Plug Connector is designed to adapt existing sensors in the field to Campbell Scientific systems that include an M12, eight-pin socket connection. The connector can accept an 18 to 24 AWG wire into screw terminals that require a 2 mm flat-bladed screwdriver for tightening.
Orderable31608
Flat-Bladed Screwdriver, 2 mm Blade x 40 mm Shaft
The 31608 is a small, flat-bladed screwdriver that is recommended for field-wirable circular connectors. The blade is 2 mm across, and the untapered shaft length is 40 mm. The handle has an approximate length of 8 cm, and it features a rotating end cap that makes the screwdriver easy to rotate.
Orderable31182
27 dBi GPS Antenna with 3 V Magnetic Mount and SMA Connector
The 31182 is a magnetic mount GPS patch antenna. It is typically used where GPS reception is readily available and concern is low for snow buildup completely covering the antenna. The 31182 is also commonly used in cost-sensitive applications or applications that require a small-sized, low-profile antenna. This antenna connects to a GPS receiver with SMA connector, such as that found in the AL200, LS300G, TX320, and WEATHERPAK®M. The antenna package is waterproof and corrosion resistant. The 31182 conveniently mounts to any magnetic surface, which includes the 30626 and CM235 mounts offered by Campbell Scientific.
Orderable17992
28 dBi 3.3 V active GPS Antenna without Cable
This GPS antenna is typically used with the TX326, TX325, and TX320 satellite transmitters or the AL200 ALERT modulator. This active GPS antenna provides 28 dBi of preamp for weak signal or long cable run applications. It also provides filtering to improve immunity to other RF signals, making it highly jam resistant. Its weatherproof package is designed to withstand exposure to shock, vibration, extreme temperatures, rain, snow, and sun. The antenna conveniently mounts to any 1 to 14" thread or 3/4" pipe thread, which includes the 30626 and 7623 mounts offered by Campbell Scientific.
Orderable30626
3/4 in. IPS or GPS Antenna Mounting Stand
The 30626 is an antenna mounting bracket designed for antennas with 3/4 in. IPS mounting threads. It is most commonly used with the 17992 GPS antenna or the 30741 Iridium antenna. Because the 30626 is made from steel, it is suitable for mounting small magnetic-mount antennas typically seen with GPS patch antennas.
Orderable7623
3/4 IPS 10 in. Aluminum Pipe with Threads
This aluminum 0.75" IPS threaded pipe has a 10" length. The 7623 allows attachment of a 03001 Wind Sentry or GPS antenna to a CM202, CM204, or CM206 crossarm via a 1049 Nu-Rail fitting or CM220 right-angle bracket. The GPS antenna is used with the TX320, TX312, and TX325 GOES satellite transmitters.
Orderable31326
Surge Protection Kit, GPS Antenna Type N to SMA
The 31326 is a GPS 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 GPS receiver with an SMA antenna connection. The other side connects to the GPS antenna/antenna coaxial cable with Type N connector. The surge protector passes up to ±6 Vdc, commonly needed for active GPS antenna applications.
OrderableCOAX3NT
LMR195 Antenna Cable with Type N Pin (Male) and TNC Pin (Male) Connectors
The COAX3NT is an LMR195 coaxial cable fitted with a Type N pin (male) connector on one end and a TNC pin (male) connector on the other end. This cable is commonly used to connect a GPS antenna with TNC connector to an in-line surge suppression, or to connect an antenna with Type N connector directly to a radio with a TNC connector.
Orderable35539
VHF Antenna Kit
This VHF antenna kit includes all the necessary cables, mounts, connectors, and antenna for typical VHF radio applications.
OrderableALERT2ADM
ALERT2 Administrator (requires LoggerNetADM)
ALERT2 Administrator is ideal for ALERT2 and ALERT network administrators who have smaller networks (1 to 100 stations) or who are seeking a more cost-effective solution for collecting and monitoring their data. This simple, reliable, and flexible software package aids network administrators in distributing data to their constituents.
OrderableLoggerNet Admin
Admin Datalogger Support Software (Server and Clients)
LoggerNet Admin builds on the foundations of LoggerNet, providing additional clients, capabilities, and tools that are useful when managing a large data logger network.
Orderable
Replacement Parts
(7)42815
Four-Unit Desiccant Bags (quantity of 10)
The 42815 includes 10 large, four-unit desiccant bags, used to absorb humidity within enclosures. Multiple packs are recommended for customers who need to desiccate multiple enclosures or systems.
Orderable28878
Replacement Enclosure Humidity Indicator Card
The 28878 is a replacement humidity indicator card. It provides a visual reference of humidity level inside the enclosure. Colored circles change color from blue to pink to indicate levels of 30%, 40%, and 50% relative humidity. Double sticky tape on the back of the card allows it to be easily secured to an enclosure lid.
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.
Orderable44566
ALERT2 Maxon Radio with User-Specified Frequencies
The 32403 is a 148 to 174 MHz radio, manufactured by Maxon Australia. The 32403 is a rugged, narrowband UHF/VHF 5 W radio transceiver that provides a long-distance telemetry option for communicating with remote measurement stations. The 32403 is designed for customers with an FCC-assigned frequency in the range of 148 to 174 MHz. The 32403 is well-suited for use with transmitters in Campbell Scientific ALERT/ALERT2 networks. An FCC license is required.
OrderableAL200X
ALERT and ALERT2 Modem and Sensor Interface
The AL200X is an ALERT2 modem and sensor interface for use in critical flood warning weather systems. It meets the ALERT2 standards maintained by the National Hydrologic Warning Council (NHWC) and ALERT Users Group (AUG). ALERT2 improves the accuracy and performance of flood warning systems and software by providing faster data transfer, forward error correction, and a time division multiple access (TDMA) architecture.
Orderable8054
12 V 12 Ah Battery without Cable
The 8054 is a rechargeable, 12 V, 12 Ah battery that can power an ALERT system.
Orderable10072
12 V 24 Ah Battery without Cable
The 10072 is a rechargeable, 12 V, 24 Ah battery that can power an ALERT system.
Orderable
Similar Products
(1)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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