Crisp, high quality images *Simple operation and installation *Light and easy mobility *Equipped with anti-fog, non-spherical lens *Super-wide automatically adjusting-focus lens *Handpiece holder with automatic power-off function *Singe image screen and 4 image intersected screen can be changed to each other. * With VIDEO, S-VIEDO, USB and VGA output function. *It adopts microwave transmission the same effect with satellite. *Long distance and high clarity image transmission. *Can be captured images by wireless control in store. *It can be wireless controlled quarter image switch. *4 channels option *Can be stored 240 PCS pictures totally. *With quickly deleted image, re-captured and enlarge function. *With specific remote control. *Both freeze function of footplate and handiece. *With multi-functional button. *With multi-function of image signal output. *Up and down page can be controlled by the button of handpiece. *It can be with external infrared sensor without any fail.