Resideo 4959SN V-Plex Addressable Overhead Door Contact

Description

Resideo 4959SN V-Plex is the patented polling loop technology that literally defines price and performance on a simple pair of wires.

By using two wires instead of four, V-Plex offers significant advantages over home run wiring or the conventional four-wire multiplex-providing economical expansion of peripheral devices and point identification to your central monitoring station.