About this item

• 【Package Included】: 2 Sets x Alarm Magnetic Reed Switch;Model: MC-33C
• 【Application】: The door contact sensors work as an anti-theft alarm, ideal for metal door and window.
• 【Easy To Install】: Have small screw terminals which makes it much easier to wire. Closed loop magnetic contact that features a terminal block style connection for accepting wire.
• 【Contact Type】: NC means Normally Closed: When the magnet together, the circuit is conductive( light on ); When the magnet separate, the circuit is not conductive ( light off )
• 【Has many uses】 MC-33C Door Contact Sensorsthe door contact sensors that are in use with any and all commercial or residential card access systems as well as all security burglar alarm system