FOCMKEAS 3Pcs Magnetic Reed Switch Wired Surface Mount Normally Closed NC Contact Sensor Alarm Magnetic Door Switch with 2 Wires, Zinc Alloy Sliver, MC-51

• 【Size】Body size(approx.): 32*15*8 32*15*8mm(L*W*H), Cable length: 260mm/10.2", Action Distance:20-30mm/0.8"-1.2", package include 3 pairs.
• 【Material】The magnetic switch alarm is with zinc alloy housing for better rust resistance, durable and high strength.
• 【Normally Closed (NC)】Normally closed type with 2 wires. When the magnet together, the circuit is conductive( light on ); the circuit is not conductive ( light off ) if the magnet separates.
• 【Application】This magnetic contact switch is usually used for metal door/windows include rolling Door. The door contact can be used with an access control or anti-theft alarm system.
• 【Note】The Magnetic Door Switch must be installed as per the sensing distance. It can only provide a switch signal to the transmitter. It can't directly load the power, nor directly connect the lamp.

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