Check the listing for details. 5 Recessed Door Window Burglar Security Alarm System Terminal Switch Sensor. Condition: New. Listed at 16.00 USD. 5 Recessed Switches and 5 magnets¾" Día Press Fit Steel door contactWide Operating Gap 1 3/8" (35mm) min.Regular screw terminalEasy & Quick InstallationClosed loop works with most alarm panelsWhen the magnet is next to the switch the loop is closed.When the magnet is pulled away the loop opens. Reed Switch SpecificationsContact Rating: 10W/VASwitching Voltage (Max.) : 200 VDCSwitching Current (Max.) : 0.5 Amp. Contact Resistance (Min.) : 150 milli ohmsLife Expectancy: 10x 10 6 OperationsInsulation Resistance: 10 9 ohmsShock Resistance: 30G for 11mSec. Vibration Resistance: 20G (10 to 1000Hz) Magnets: Rare Earth Plastic Material: ABS PlasticIf you have any questions please Message BEFORE you buyThank you for doing business with usAlarm Dealers Welcome