This ESP-01S DHT11 Module based on the ESP8266 and temperature & humidity sensor DHT11. Which is a little node you can put it anywhere you like use in your smart home IOT project. ESP8266 collection environment temperature and humidity upload to the server. Support 3.7v-12V DC power supply (3.7V lithium battery).
The package includes only 1 x ESP-01S DHT11 Module, it doesn’t include ESP-01 WiFi Module