This module is mainly controlled by esp8266-01 / esp-01s, and DHT11 is the temperature and humidity sensor. The temperature and humidity of ESP8266 are uploaded to the server. Support 3.7 v-12v DC supply (3.7 v lithium battery). It can be used as a temperature and humidity collection node for smart home or IOT projects.
Master: ESP-01 / ESP-01S (this module does not include ESP-01 / ESP-01S)
Temperature and humidity sensor: DHT11
Operating voltage: DC 3.7V-12V (support 3.7v lithium battery power supply)