Ambient Weather WH31P Water Proof Probe Temperature Sensor for WS-1550-IP, WS-1965, WS-2000, WS-2902B, WS-2902C, WS-3000, WS-5000 and ObserverIP Series Weather Station

Availability: In stock
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Note: TheWH31P sensor is not a stand-alone device and requires a WS-2902B (or greater revision), WS-1965, WS-2000 or WS-5000 weather station to view and upload the data to our cloud hosting service at

Accessory for the ObserverIP, WS-1965, WS-2000, WS-2902B, WS-2902C, WS-3000, WS-3000-X3, WS-3000-X5, WS-0265 and WS-5000 (total of 8 sensors).

The remote sensor includes a 10-foot waterproof probe, ideal for measuring any wet temperature medium, including water, soil, refrigerators, and freezers. This sensor has an IPX4 water resistance rating.

The probed sensor has a low thermal mass and responds quickly to temperature changes.



Find support for this product

Weather Features

  • Temperature

Additional Features

  • 10' water-proof probed thermometer
  • LCD display
  • Suspension eye for easy mounting
  • Outdoor temperature range: lithium batteries: -40°F to 140°F
  • Outdoor temperature range: non-lithium batteries: -4°F to 140°F
  • Dip switch selectable remote channels
  • Monitors temperature in up to 8 remote locations
  • Transmission range of up to 300 feet line of sight (100 feet under most conditions)
  • Frequency: 915 MHz
  • Update Rate: 60 seconds
  • Sensor Dimensions (LxHxW): 4.75 x 1.5 x 0.6 in
  • Power requirements:
  • Remote Sensor - 2 x AA (not included)

Product Support Questions

To edit the label name on the console, select the Settings button , and then the down arrow  9 times until Multi Channel Sensor Setup is highlighted and press plus  to view the channel settings.

To edit the channel name, Press  or  key to select the channel name.  The name field will turn green.

Press the   key to view the keyboard, and enter the sensor name. Press   to scroll to the character and press   to select the character. Press ‘OK’ to save your newly labeled Sensor. Press   to return to the setup page.


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If the display console only displays km, make sure your firmware is up to date. This issue was resolved in Version 1.6.3:

Ambient Weather WS-2000 And WS-5000 Firmware Download Center

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Q: Which sensors work with the WS-2902B console?

A: The WS-2902B will ONLY work with the WH31/WH31B/WH31E, WH31P (probed) and PM25/PM25IN sensors.

The sensors are “pass-through”, which means they will not appear on the local display console, but are displayed on

It will NOT work with WH31L (lightning), WH31LA (leak alert), WH31SM (soil moisture) .

The following image is an example of a channel 1 sensor. The title is customizable on the website:

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