Product Features:
1.1/4" Sharp CCD with 420TV lines
2.Infra-red LEDs for night-time vision
3.Weather-proof design for outdoor usage
4.4-channel available to avoid interference
5.Channel scan and channel skip for multi-camera usage
6.Built-in microphone for audio monitoring
7.Min. 100m transmission distance without block
Effective night vision range: 15m