WN36 Pool Thermometer

Regular price $23.99
Regular price Sale price $23.99
Shipping is calculated at checkout. (For EU customers: For parcels shipped via [Standard]YunExpress / 4PX / others, VAT is included.)
Packaged version & Sensor or gateway link frequency: North America MHz 915
WN36 - ecowitt (7535233826978)
Regular price $23.99
Regular price Sale price $23.99


  • Poolthermometer with an anchor.
  • None opening design with ultrasonic body welding: IP68 waterproof.
  • Idle mode for further powerreduction (keep pressing the button for 8 seconds).
  • Minimum operating lifetime: 3 years.
  • User-selectable channel number up to 8 channels.


Measurement Range Accuracy Resolution
Temperature 0°C to 60°C (32°F to 140°F) ±1° 0.1°

Power Consumption

  • Non-replaceable battery life: Minimum 3 years (5 years by stationary state)

Transmission between Gateway and Sensor

  • Transmission distance in the open field: 100 m (330 ft.) depends on the environment
  • RF frequency: 915 MHz
  • Updates on the gateway: About 60 seconds

Two Working Mode

1). Idle mode

  • press button 3s to wake up the device. Once power up, it will display the “36” model number and RF frequency, like 915, for 2s, and resume normal mode operation.

2). Normal mode

  • quick press once to toggle Celsius or Fahrenheit temperature unit.
  • Press and hold for 3s, the channel number will start to flash. Release and press once in a cycle between channels 1 and 8. Leaving key untouched for 10s will terminate the channel setting.
  • Press and hold for 8s will force the device to enter idle mode: LCD will be off and enter a minimum power consumption state. If you keep the WN36 in idle mode for 6 months per year, you can extend the battery life to a minimum of 5 years.

Package Content

  • 1 x Pool thermometer EN36
  • 1 x User Manual

Compatibility Instructions

for all ecowitt network consoles

Please follow the table to make sure you choose the right sensors and concoles before check out.
Note: The "1/4/8/16" means 1 console supports 1/4/8/16 sensors
( excluding accessories )

Customer Reviews

Based on 6 reviews
Nick Coote
Works well - but it’s throw-away after 3 years when the battery runs out

For the price, this pool thermometer is excellent, but the battery is not replaceable so the whole device has to be thrown away after 3-5 years of use… so this is not a very ecological product: I would rather pay twice the price or more for something that is more ecologically responsible (i.e. a rechargeable or replaceable battery). The display in the Ecowiit app is also odd with this device as it tries to display humidity as well as temperature: I don’t know why Ecowitt have done this, they have perfectly usable temperature probes available that just display temperature: clearly my swimming pool will hopefully be at 100% humidity :)

Thys te Poele

As good as expected only app shows - - on humidity strange it displays something that isn’t meassured

Uses a Temp&Humidity channel!

They don't tell you but this will use one of your temp and humidity sensor channels so if you already own 8 you will have to junk one and lose the ability to monitor one room. Should have been made a fully new sensor or been assigned with the other temp probes like leaf wetness etc. I hope they change it as this is a big mistake

Jerker Andersson
Quick delivery

Haven't used the device yet.

trond leira
Finally a solution that works

Have been looking for a solution to monitor water temp for a while and this little device works more than fine. My old gw1000a found it immediately and it reports back temp even when the pool is outside 50-60m away. Only drawback is that the batteries are not changeable, but they last up to 5 yrs and the price for the sensor is a lot lower than any alternative I have seen