Ecowitt WN31 (WH31) Multi-Channel Temperature & Humidity Sensor

We normally deal direct with the main importer WeatherSpares, which is why we pass you onto them to complete your purchase. However we are aware that sometimes Amazon and Others run special deals, so for your convenience, we also check every day to see what is available.  The latest information is below, so just click on the relevant price:

Ecowitt WN31 (WH31) Sensor

£8.25 at Aliexpress £17.86 at Amazon.co.uk £19.00 at Weatherspares.co.uk £22.99 at eBay

Amazon price updated: 7th January 2026 10:59 pm

Features

• Measures temperature and humidity
• Configure for use with the GW1000 WIFI gateway using the WS View App
• View readings directly on the WS View App
• Supports up to 8 sensors
• LED display with Fahrenheit and Celsius selectable
• Upload data to the Ecowitt weather server to view history graphs and download the date from the website
• Classed as an additional sensor, does not report to Weather Underground a WH32 is recommended for this service

Technical Spec

• Temperature range: -10°C – 60°C (14°F – 140°F)
• Temperature resolution: 0.1°C or 0.1°F
• Temperature accuracy: ±1°C
• Humidity range: 10% – 99%
• Humidity resolution: 1%
• Humidity accuracy: ± 5%
• Cable length: 1m / 3 feet
• Transmission distance in open field: 100m (300 feet)
• 868MHz transmitter
• Classed as an additional sensor, does not report to Weather Underground a WH32 is recommended
• Sensor reporting interval: 61 seconds
• Power: 2 x AA 1.5V LR6 Alkaline battery