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Features: 1.With fixing screw hole, convenient to install and fixed 2.Single-bus digital signal output, bidirectional serial data 3.Type: DHT22 temperature and humidity sensor 4.Operate voltage: DC 3~5.5V 5.Temperature range: -40 to 80 degree celsius 6.Temperature measurement accuracy: ±0.5 degree celsius 7.Humidity measuring range: 0~100%RH 8.Humidity measurement accuracy: ±2%RH 9.Working voltage: DC 5V common 10.Size: 28 x 12 x 10 mm (L / W / H) 11.Screw hole diameter: 2.6mm 12.Weight: 4g