The soil moisture sensor has been loaded the firmware before shipping and it is ready to use as getting to customers hands.

Install 2 AAA batteries.

Plug it into the soil, anywhere you would like.

Then it will begin to work, with broadcasting its unique ID and testing data via Lora, in a few seconds, and fall into sleep with 60 minutes, and then broadcast again(in 2s), repeated again and again.

Please check the wiki for the usage detail.