The video output from the camera is feed into the video input of the modulator and the modulator is set to the channnel which you want the video to appear on the televisions in the system.               Contact SALES Comments to WEBMASTER www.cctvhardware.com is TM & © 2008 Security Design Services Corp. Security Design Services Corp. is an independent Pelco® dealer and is not affiliated with Pelco Corporation. All promotional art, characters, logos and other depictions are TM & © their respective owners. Pelco is a trademark of Pelco - Clovis, CA, and may be registered in certain jurisdictions. All Rights Reserved. Cameras | Video transmission | Lenses | Monitors | Time lapse recorders | Switchers | Quads | Multiplexers | Housings | Cabinets & Racks | Keyboards and Controls | Mounts | Scanners and Pan/Tilts | Camclosure | Spectra | Power Distribution | ImagePak | Domepak | Esprit | Receivers | Digital Recorders | Video over Network Security Design Services family of companies cctvhardware.com | allkindscable.com | securityideas.com Site design by Superior Media