The Honeywell 940WH is a white, surface mount, magnet contact designed to monitor windows and doors and trigger an alarm when unauthorized entry occurs. The unit has a sleek, low profile cover that hides mounting screws and terminals. But don’t let this contact’s small size fool you. It uses advanced, magnet gap technology to determine if a door or window opens, and then transmits a signal back to the alarm panel. The 940WH is an ideal contact for securing access points in homes or offices.