5 pcs Recessed Brown Door Contacts NC Security Alarm Door Window Sensors With Magnetic Reed Switch. These ¾” Door Contact Position switches (DCS) Work with All Access Control and Burglar Alarm Systems auspowers_batchthree Compatible with: Garmin Nuvi: 2577LT Colour Name:12 V, 3 A, 36 W

5 pcs Recessed Brown Door Contacts NC Security Alarm Door Window Sensors With Magnetic Reed Switch. These ¾” Door Contact Position switches (DCS) Work with All Access Control and Burglar Alarm Systems auspowers_batchthree Compatible with: Garmin Nuvi: 2577LT Colour Name:12 V, 3 A, 36 W Compatible with: Garmin Nuvi: 2577LT 42 42LM 52 52LM 54 54LM 2457LMT 2497LMT 55 55LM 55LMT 56 56LM 56LMT Garmin Nuvi 44 44LM 2558LMTHD GPS< br> What's in the box multipurpose to your entire backThe best quality materials make this a long lasting Back stretcher device that you can use safely in the comfort of your own home or officeFor additional peace of mind the contact will give an open signal and when the door is closed the contact will give a closed (circuit) signal When the door or window shuts