wood finish
securitron dps w bk recessed door contact wood finish
used to monitor the status of a door or to provide an initiate signal to securitrons xdt delayed exit logic timers and dpa door prop logic timers . both components require drilling a 3 4 19mm diameter hole in the door and frame directly opposite one another . the dps w style is a normally closed switch spst . the distance depends on the door type and gap between the door and frame but is in the 1 2 3 4 12 18mm range . includes a magnetic switch and a cylindrical permanent magnet .