Home Wired Alarm Security Magnetic Door Contact Reed Sensor Switch White 2 Sets

Surface mount contact, screw mount?white?ABS housing. Wire is not included.Comes with installation screws.
Great for use in family and factory wooden?windows, doors. etc.
Switch type:?NO(normal open?type), circuit is connected when magnet is near the switch.
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• Size: 6.4 x 2.5 x 2cm/2.5" x 1" x 0.79"(L*W*H); Product Name: Magnetic Door Switch
• Color: White
• Material: Plastic
• Working Voltage: DC 100V