The GV-Q4CHRTC is a high definition double system 4-channel color quad processor that enables the connection of up to four cameras to simultaneously display and record on external devices, such as monitors or VCRs. The GV-Q4CHRTC features picture freeze, 2x zoom, and an external alarm output. Display features include quad mode, single camera, or sequencing of all cameras. The GVQ4CHRTC makes programming easy with an intelligent pull-down menu. For small surveillance needs, choose the GV-Q4CHRTC Digital Color Quad Processor.