Description
The Resideo 4939SN-BR V-Plex Surface Mount Contact With Cover is a security sensing part used to monitor the open and closed position of doors, windows, and access panels in building control equipment within HVAC systems. Designed for V-Plex addressable alarm circuits, it transmits status signals to compatible control panels when contact separation occurs. The brown surface-mount housing allows placement on finished frames and entry points where concealed placed is not practical. This contact is commonly used in commercial facilities, integrated with building automation systems requiring coordinated monitoring, conditional control response, and secured access management during routine operation.
