This module uses ESP8266-01/ESP-01S as the main control, and DHT11 is the temperature and humidity sensor. ESP8266 collects the temperature and humidity in the environment and uploads it to the server. Support 3.7v-12V DC power supply (3.7V lithium battery). It can be used as a temperature and humidity collection node for smart home or IOT projects.

characteristic:*Main control: ESP-01/ESP-01S (this module does not include ESP-01/ESP-01S)*Temperature and humidity sensor: DHT11*Working voltage: DC 3.7V-12V (support 3.7v lithium battery power supply)*Measuring range: 20-90%RH 0-50℃*Measurement accuracy: temperature: ±2℃, humidity ±5%RH

Application examples:1. Power supply: 3.7V-12V DC power supply connected to VCC GND (2.54mm pin header)2. Download the program to ESP-01S (this connection does not include this wireless module)3. Insert ESP-01/ESP-01S (this connection does not include this wireless module) into the 2*4 Pin header (in the direction of the arrow)