1. Monitoring range: 10-100sqm (adjustable)
2. Working voltage: 12 V DC regulated power
3. Supply current: 20mA
4. Transmission distance: up to 3000meters
5. Sensitivity Reduction: -35db
6. Signal Noise Ratio: 70db
7. Frequency response: 20hz to 20KHz
8. Working Environment::-30 Degrees Celsius ~60 Degrees Celsius.
9. Connecting way: red line–power, black line – ground wires, white line — audio.
10. Weight: 80g (Size: 95mm*95mm*30mm)