DHT22 Temperature and Humidity Sensor 1 Channel Relay The rule only allows 7

SKU: 89771752140

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DHT22 Temperature and Humidity Sensor 1 Channel Relay The rule only allows 7DHT22 Sensor for Temperature and Humidity The DHT22 is a basic, low cost digital temperature and humidity sensor. It uses a capacitive humidity sensor and a thermistor to measure the surrounding air, and spits out a digital signal on the data pin (no analog input pins needed). Its fairly simple to use, but requires careful timing to grab data. DHT 22 output calibrated digital signal. It utilizes exclusive digital signal collecting technique and

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