1 can detect ambient humidity and temperature
2 sensors using DHT11
3 humidity measuring range: 20% -95% (range 0 degrees -50 degrees) and humidity measurement error: + -5%
4 Temperature measurement range: 0 degrees -50 degrees temperature measurement error: + -2 degrees
4 Operating Voltage 3.3V-5V
Output in the form of digital output 5
6 with fixed bolt hole for easy installation
7 small PCB board size: 3.2cm * 1.4cm
8 power indicator (red)
9 Each weighs about 8g

Two module interface specification (3-wire)
1 VCC external 3.3V-5V
2 GND GND External
3 DO small plate switch digital output interface connected to the microcontroller IO port