Features: * 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
