Latch switch contact, for installation inside a door frame. Changeover switch (max. 3 W, max. 30V DC) with solder connection is activated by mechanically pressing the door lock. Suitable for locking monitoring. The RSK3 can also be used for arming the 8000 or 9000 system, but not for disarming. Dimensions: 10 x 44 x 22mm.