ESP8266 WIFI DS18B20
This ESP-01/ESP-01S DS18B20 Temperature module based on the ESP8266 and digital temperature module DS18B20. It is good for meature the temperature and uploader to the server as a node. It supports 3.7 to 12VDC power, so you can power it by a lipo battery and put it anywhere you need to meature the temperature. It is really useful in your smart home and IOT project.