Product picture - COMNET FVT4012M1 4-Channel Digital Video 2 Bi-Directional Data 1 Bi-Directional Contact Closure Transmitter for FVR4012M1 Receiver COMNET, FVT4012M1, 4-Channel, Digital, Video, 2, Bi-Directional, Data, 1, Bi-Directional, Contact, Closure, Transmitter, FVR4012M1, Receiver Click the image to close this page