Describes a baby 1 can detect ambient humidity and temperature of the second sensor using DHT11 . 3 humidity measuring range: 20% -95% (range 0 -50 ) Humidity measurement error: + - 5% 4 temperature measuring range: 0 - 50 of the temperature measurement error: + - 2 degrees 4 working voltage 5V-3.3V . 5 form output digital output 6 provided with a fixing bolt hole, easy installation 7 small PCB board size: 3.2cm * 1.4cm . 8 power indicator (red) 9 Each weighing about 8g
Two-module interface description (3-wire) 1 VCC External 3.3V-5V 2 GND External GND 3 DO Small board switch Digital output interface Connect the microcontroller IO port