Detex MS-1039S/1059S

The MS-1039S is designed primarily to serve as a sensing devices to detect the opening of a door or window; to assure that a protected door is securely under surveillance; to serve as a trigger for a wall-mounted DetexExit Alarm; to signal that a door has been inadvertently left open; and to be used as a direct switch to set off many kinds ofaudio and visual alarms.