Check the listing for details. Home Alarm Door/Window Surface Mount Security Contact Sensor. Condition: New. Listed at 11.00 USD. 1 Mini Surface Alarm Switch Reed Surface Mount Door Window Security Alarm Switch SINGLE Switch with magnet Mini Stick-on Surface Mount Contact Switch with side leads Flange for Convenient Mounting 18" Long Side Wire Leads 3/8 W x 2.1/16 L 1/4 tall inches Operate Gap Min. =" (12.0mm) When the switch is next to the magnet the loop is closed. When the switch pulls away from the magnet the loop opens. Reed Switch Specifications Contact Rating: 10W/VA Switching Voltage (Max.) : 200 VDC Switching Current (Max.) : 0.5 Amp. Contact Resistance (Min.) : 150 milli ohms Life Expectancy: 10x 10 6 Operations Insulation Resistance: 10 9 ohms Shock Resistance: 30G for 11mSec. Vibration Resistance: 20G (10 to 1000Hz) Plastic Material: ABS Plastic If you have any questions, please Message BEFORE you buy. Thank you for doing Business with us. Alarm Dealers Welcome