Check the listing for details. 10 Adjustable Plunger Door Window Cabinet Alarm Switch. Color: White, Condition: New. Listed at 23.00 USD. Plunger Switch Bag of 10 screw Provided 3/8" Dia Mounting Hole needed Flange for Reliable Retention 3 mm pre-travel stroke and 7mm overall operating stroke 18" Long Wire Leads. 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) Magnets: Rare Earth Plastic Material: ABS Plastic When the plunger is depressed the loop closes. When the plunger is extended the loop opens. If you have any questions please Message BEFORE you buy Thank you for doing business with us Alarm Dealers are Welcome