Ambient Weather WH31E Wireless Temperature and Humidity Sensor for WS-1550-IP, WS-2000, WS-2902, WS-1965, WS-3000, WS-5000 and ObserverIP Series Weather Station

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The WH31/WH31E features eight channel dip switches for multi-channel and degF/degC display. The WH31E replaces the WH31B.
This sensor has a IPX4 water resistance rating.

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

Includes Radio Controlled Clock (RCC) receiver.

Features of the Ambient Weather WH31E

  • 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

Remove the battery door on the back of the transmitter(s) by sliding down the battery door, as shown below:

Figure 1

BEFORE inserting the batteries, locate the dip switches on the inside cover of the lid of the transmitter.

  1. Channel Number: The ObserverIP supports up to eight transmitters. To set each channel number (the default is Channel 1), change Dip Switches 1, 2 and 3, as referenced in Figure 2.
  2. Temperature Units of Measure: To change the transmitter display units of measure (°F vs. °C), change Dip Switch 4, as referenced in Figure 2. Switch in down position.   Switch in up position.

Figure 2

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To change the transmitter display units of measure (°F vs. °C), change Dip Switch 4, as referenced in the figure below.

Switch in down position . Switch in up position .

Remove and re-insert the batteries after changing the switch position.

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Water proof means the sensor can be submersed in water.

Water resistant means the sensor can be left out in the rain.

The sensor is water resistant but not water proof.
If you want accurate readings, you should keep the sensor out of the sun as it absorbs solar energy.
Thus,  protection from the elements is not required but recommended.
Consider the SRS100LX from placement of the sensor in direct sunlight:

and achieve accurate readings.
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The sensor is water resistant but not water proof. It cannot be submersed into water but can be placed in the rain.

However, it is best to avoid direct rain. It will not last as long, and will give you incorrect humidity readings as well.

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To Calibrate the Multi CH T& H sensors you will need to access the Web GUI. To access the Web GUI you first press and hold the Temp and Rain buttons together on the console for 5-10 seconds.


The console will then flash the wifi icon by time and date.


Then on your phone, tablet or computer go to settings, and then the wifi networks. Select the consoles access point. It will start with WN1965B-WIFI


It will say connected without wifi or no internet or sometimes it will checkmark. After that you open a web browser and type into the web address bar If it pops up a screen that say login, use Admin for the username, make sure the password is blank, then click the login button.


It will then let you access the Web GUI. On the left click on Calibration.


Once in calibration scroll down and select Multi CH T&H Calibration


On the next screen it will then let you calibrate the Multi CH T&H sensors. 

After entering the calibrations click save. 


Then the console will calibrate to the new entry.

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