Camera for system expansion. Channels in the camera. There are channel requests and package best before shipping, write us an E-Mail. No Night Vision and no sound when this modell. Small Size (approx. 66X23X23 CM), light weight 60 gr, low power consumption, high sensibility, easy operation to an installation. Suitable for monitoring children, old people and houses, companies, shops, factories etc... The camera can be used with the enclosed power supply with battery (battery clip for 9 Volt Block Battery Required). CMOS 628x582 (PAL), 2,400 MHz ~ 2,483 MHz; 10mW; CH1: 2,414MHz * * CH2: 2,432MHz * * CH3: 2,450 MHz * * CH4: 2,468 Mhz * * The camera channel is medium in front. Bandwidth: 18 MHz; 8 Volt 90 mA; Range approx. 50 – 100 m (free field)