DHT22 Temperature Humidity Sensor Module

DHT22 Temperature and Humidity Sensor Module

Features:

• 3.3-5V Input
• 1-1.5mA measuring current
• 40-50 uA standby current
• Humidity from 0-100% RH
• -20 – 80 degrees C temperature range
• +-2% RH accuracy
• +-0.5 degrees C

Pin Mapping (When the Sensor is kept facing you, left most pin is Pin 1)

• No: Pin Name Description For DHT22 Sensor
• 1 Vcc Power supply 3.5V to 5.5V
• 2 Data Outputs both Temperature and Humidity through serial Data
• 3 NC No Connection and hence not used
• 4 Ground Connected to the ground of the circuit

• For DHT22 Module
• 1 Vcc Power supply 3.5V to 5.5V
• 2 Data Outputs both Temperature and Humidity through serial Data
• 3 Ground Connected to the ground of the circuit

Operating Voltage: 3.5V to 5.5V

Operating current: 0.3mA (measuring) 60uA (standby)

Output: Serial data

Temperature Range: -40°C to 80°C

Humidity Range: 0% to 100%

Resolution: Temperature and Humidity both are 16-bit

Accuracy: ±0.5°C and ±1%