*1/4 CCD, 420TV lines sharp picture display *Super mini size: 50X42X32mm *Min 100m(300 feet) transmission distance without block *Can be used on TV, monitor, LCD, etc. *Suitable for monitoring children and elders, and widely used for theft prevention, after-hours surveillance, home security, etc. Match With: ZT-707 2.4G Wireless AV Color Receiver (Tact-switch, 4-channel)