Insert two AAA batteries into the Lora Temperature/ Humidity/ Soil Moisture Sensor V3 battery compartment, burn the code into the ESP32S3 based 4G LTE module, and open the serial port, when ESP32S3 based 4G LTE module successfully...
sanded, without epoxyfirst layer epoxysecond layer and a little bit overfilledRest of the housing also treated with epoxysanded againBlack tinted with car taillight tint spray