Ecowitt WH51L Wireless Soil Moisture Sensor with Extended Cable

Add the WH51L sensor to the Ecowitt WiFi gateway or weather station to include soil moisture readings in you weather data. Upload data to the Ecowitt network to view a history of soil data or view live on the sensors LCD screen.

Transmits readings every 70 seconds, unless a rapid change in moisture is detected (such as irrigation) then this increases to every 10 seconds.

For details on which weather products support the WH51L soil moisture sensor,  click here to view the latest Ecowitt sensor matrix.

Up to 8 soil sensor readings are available to view in the App, or online via Ecowitt.net and in the 3rd party websites that support this sensor types. The MetOffice WoW service now supports the first sensor of this type (channel 1).

Features

• Measures soil moisture
• 1 meter lead from transmitter head to sensor
• LCD screen for direct readings or via Ecowitt App
• Configure for use with the GW1100 or GW1200 WIFI gateway or range of LCD & TFT screen weather stations
• 868MHz UK / European frequency 
• Use up to 8 soil sensors 
  
• Upload data to the Ecowitt weather server to view history graphs and download the data from the website in Excel
  

Important Tip:

1. Do not push the sensor into stoney or rocky soil. If the soil is too hard and dry, the sensor can easily be damaged.
2. Design for testing soil ONLY.
3. It is recommended to totally insert the sensor into the soil and keep it in place for 2 to 3 minutes to get an accurate reading.

Includes

• 1 x Soil Moisture Sensor
• 1 x Screw ST D5.8*M3*15 Stainless Steel PA for Mounting
• 1 x Stainless Steel Loop 19~298mm for Mounting
• 1 x Fix Bracket 35.1x21x20mm Stainless Steel for WN51L
• User Manual

Technical & Manual

Technical information for the WH51L soil moisture sensor. 

• Moisture Range: 0~99% 
• Accuracy: +/- 5%
• Resolution: 1%
• 0%AD setting range: 0~200 initial value factory calibrated
• 100%AD setting range: 0%AD+10~1000; Initial value factory calibrated
• Transmission distance in open field: 100m (300 feet)
• 868MHz UK / European frequency
• Sensor reporting interval: 70 seconds / 10 seconds during rapid changes
• Operating Temperature: -10°C to 50°C (14°f to 122°f)
• Transmitter Housing Waterproof Level: IP66
• Sensor Probe Waterproof Level: IP68
• Power: 1 x AA LR6 Alkaline battery

 

A copy of the WH51L manual can be viewed by clicking here.

Important Tip:

1. Do not push the sensor into stoney or rocky soil. If the soil is too hard and dry, the sensor can easily be damaged.
2. Design for testing soil ONLY.
3. It is recommended to totally insert the sensor into the soil and keep it in place for 2 to 3 minutes to get an accurate reading.

Product Warranty

2 year warranty from date of purchase from May 2025, 1 year on purchases before this date - return to supplier. 

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