The WH40H rain gauge and a choice of Ecowitt WiFi gateway allows you to record rainfall readings and upload to the Ecowitt network and other online services. Exceptional accuracy at 0.1mm / 0.01inch resolution and the rain gauge is self emptying for minimum maintenance with anti bird spikes and rain debris filter also included.

The GW1100 model includes builtin temperature, humidity and barometric pressure sensors for indoor readings. The gateway has these sensors on a wired probe so that they can be kept away from sources of heat which would skew readings. As well as these features it also has the ability to control Ecowitt IoT devices such as smart plugs and water timers.

Finally the GW3000 gateway includes the above features, but also adds a wired LAN port, microSD card slot for local data recording and an external antenna for improved communications.

Features

• Measures rainfall rate to record daily, weekly, monthly and yearly data
• No display, for use with the included WIFI gateway
• Gateway powered by standard USB power adapter (available separately)
• Configuration and live view on the mobile WS View App or built in web page
• Supports uploads to online services
• The rainfall history graph can be viewed online
• Rain sensor calibration and customised initial rain value functions available 
• Works with optional WH5360 Rain Gauge display console (sold separately)

This equipment can be expanded with additional sensors, click here to view the latest Ecowitt sensor matrix for details of what is available.

Included

• Choice of either of the following 868MHz gateways (UK/EU approved):
  
  • GW1200 WiFi gateway with IoT control
    
  • GW3000 WiFi and wired gateway with IoT control and MicroSD storage
• USB extension cable for power
  
• WH40H Rainfall Sensor 868MHz 
  

Technical & Manual

WH40H rain gauge

• Transmission distance in open field: 100m (300 feet)
• 868MHz UK and European frequency
• Measurement range: 0 – 6000mm
• Sensor reporting interval: 49 seconds
• Power: 1 x AA 1.5V LR6 Alkaline battery
  
• Estimated battery life 12 months

Ecowitt Gateway 

• 3 Built-in sensors
  • Temperature (-10°C - 60°C; resolution: 0.1°C)
  • Humidity (1% ~ 99%; resolution: 1%; accuracy: ± 5% )
  • Atmospheric pressure sensor (300 – 1,100 hPa ; accuracy: ± 5 hPa)
• IoT device control 
• Configure gateway via web browser or App
• MicroSD card storage option and wired LAN on GW3000 model
• Configure additional sensors options via web browser including calibration
• Publishes sensor data to Internet based weather services including
  • Ecowitt weather data service: ecowitt.net
  • WeatherUnderground.com
  • WeatherCloud
  • Only sensor data supported by each specific service will be uploaded
• View historical records from your weather station (outdoor temperature, humidity, wind, rain)
• View all current sensor data on a live dashboard
• View historical records, and graphs on Ecowitt.net service website. Historic records can also be exported in Excel format
• Wireless Range from external sensors: 300ft/100m (in open areas)
• 868MHz UK and European frequency
• The gateway is USB powered (power supply available separately)

Product Warranty

2 year warranty from date of purchase from May 2025, 1 year on purchases before this date - return to supplier. Batteries are excluded from warranties as they are classed as a consumable item.

See our terms and conditions for full details of our warranty details.