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)
Video: https://youtu.be/LTzc0X-ESm4
Operating mode - 8 mA
Sleep mode - 4.7 microamperes
I hope this project has earned your like.
https://www.ebay.com/itm/202932273449