Main Features: 1. Signal transmission range is 20m 2. Fast response, great anti-interference ability and durable 3. Sensor including resistive humidity sensing component and NTC temperature testing component and connect with 8-byte MCU 4. Temperature range: 0 - 50 centigrade degree 5. Humidity range: 20 - 90percent RH 6. Power: 5V 7. Mainly Compatible with: Ardunio