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.
Specification:
* main control: esp-01 / esp-01s (this module does not include esp-01 / esp-01s) * temperature and humidity sensor: DHT11 * working voltage: DC 3.7 v-12v (support for 3.7V lithium battery) * measurement range: 20-90% RH 0 to 50 * accuracy of measurement: temperature: plus or minus 2 humidity + / - 5% RH