Description -DHT22 sensor module is used for automatic control, weather stations, home appliances, humidity regulators, medical treatment, dehumidifiers, etc -No pull-up resistor needed. Just plug temperature humidity sensor module right into Arduino or ESP8266 -Temperature humidity monitor module is convenient to install with fixing screw hole -Digital temperature humidity sensor module with ultra-low power consumption -Completely interchangeable temperature humidity sensor for Arduino, long distance signal transmission Features Temperature humidity sensor module -Color: As Shown. -Material: ABS. -Size: 28x12x10mm / 1.10x0.47x0.39inch; Screw Hole Diameter: 2.6mm / 0.10inch. -The main chip is AM2302 high sensitive temperature humidity sensor -Temperature humidity sensor module features single-bus digital signal output, bidirectional serial data -With fixing screw hole, DHT22 sensor module is convenient to install and fix -The temperature range of temperature humidity monitor module is -40 to 80 with 0.5 accuracy -The humidity range of temperature humidity monitor module is 0 ~ 100% RH with 2% RH accuracy