Check the listing for details. Home Alarm Door/Window Surface Mount Security Contact Sensor 10pack. Condition: New. Listed at 26.00 USD. 10 Security Switches Mini Stick-on Surface Mount Contact Switch with side leadsFlange for Convenient Mounting18" Long Side Wire Leads3/8 W x 2.1/16 L 1/4 tall inchesOperate Gap Min. =" (12.0 mm) 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