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Please read before buying! Package includes 1 set of N/O magnetic switch Please read before buying! There is a common misunderstanding with n/o and n/c. It comes from the home security industry just making up there own standards and not understanding the universal switch meanings. n/o means normally open or if you have a magnet touching the led or motor would be on. N/C means Normally closed or if you have a magnet touching the motor or led would be OFF. in other words you wire this switch up to a door when the door is closed and the magnet is touching the alarm system would be on. and when you open the door the alarm system would be off if you have any questions please email me before buying.
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Customers find the magnetic door contact switch to be of good quality, with one noting its excellent finish. They appreciate its appearance, with one describing it as very neat.
Good quality mini switch and magnet. Easy to install, comes with sticky pad on rear but I also have screwed units to frame and door. The only down side was the delivery time, The switch is supplied direct from Hong Kong and took over a month to arrive.
The magnetic sensors are simple but effective. Even with a gap of about 1.5cm (your mileage may vary) the sensor will detect the magnet without problems.
Bought it to replace alarm sensor for home security system. Didn't like the product at all, and have not installed them. Would not recommend this sensor.
Size(Approx) : 2.8 x 1.5 x 1.3 / 1.1" x 0.6" x 0.5"(L*W*H);Color : White
Housing Material : ABS;Weight : 12g
Mounting method: SMD (by screws or double-sided tapes)
Product description
Please read before buying! Package includes 1 set of N/O magnetic switch Please read before buying! There is a common misunderstanding with n/o and n/c. It comes from the home security industry just making up there own standards and not understanding the universal switch meanings. n/o means normally open or if you have a magnet touching the led or motor would be on. N/C means Normally closed or if you have a magnet touching the motor or led would be OFF. in other words you wire this switch up to a door when the door is closed and the magnet is touching the alarm system would be on. and when you open the door the alarm system would be off if you have any questions please email me before buying.