BUY
Wireless Module for Capacitive Soil Moisture Sensor v2.0.
Running on cr2477 battery (950mA).
Used the MySensors library or Zigbee
GitHub - https://github.com/smartboxchannel/EFEKTA_E73C_PWS_MODULE (links, gerber, cod, bom, foto)
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**-- Buy on ebay.com -- ** Video: https://youtu.be/LTzc0X-ESm4
Operating mode - 8 mA
Sleep mode - 4.7 microamperes
I hope this project has earned your like.