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The DHT11 Temperature And Humidity Sensor Module with LED is a small humidity and temperature sensor that you can connect to your Arduino and get readings for temperature and humidity in the environment.Features:DHT11 sensor with PCB and LED indicator along with cable; 3 to 5V power and I/O, 4 pins ..

The AM2302 or DHT22 is a temperature & humidity sensor whose output having calibrated digital signal. It applies exclusive digital-signal-collecting-technique and humidity sensing technology, assuring its reliability and stability. Its sensing elements are connected with 8-bit single-chip comput..