Product: Dahszhi Home Security Wired Rolling Door Contact Magnetic Reed Switch Alarm
Brand: Dahszhi
Package Content 
1pcs x Magnetic Switch Alarm + Screws 

Type - Normally Closed 
Our door reed switches are NC. Please kindly know before ordering. 
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 ). 

Door Magnetic Installation Instructions 
The Door and window magnets should be installed at the door and the top of the window. The permanent magnet part is installed on the movable door and window. The switch part is installed on the fixed door and window frame. The switch part and the magnet part should be aligned and installed as much as possible. Otherwise deviation from the best conduction area of the magnetic field line and the reed switch contact will shorten the sensing distance. If the misplacement is severely installed, the switch will not sense the attraction of the magnetic field and cause the switch to malfunction. 
It is recommended to position the pen before drilling. The door magnet should be away from the string magnetic field interference source such as transformer. Otherwise, the working characteristics of the door magnet will be changed and possible wrong actions may occur. 

Risk Free Shopping 
 Full refund is guaranteed if the item has any quality issue after receiving. 

 
Our goal is to provide you a satisfied and happy shopping. Please email us if our products or services have any problem. We will do our endeavor to resolve your issues.
[Material] - The magnetic switch alarm is with premium zinc alloy housing for better rust resistance.
[Dimension] - Cable Length:44cm/17" ; Please see the second picture for detail sizes.
[Specification] - Current:0.5A ;Voltage:100V ;Action Distance:45~60mm ;Power Rating:10W
[Applicable Places] - - The Rolling Magnetic Contact Switch is designed for alarm system. Suitable for garage, shop installed shutter door applicable.
[Good Guard to Keep Your Home Safe] - Sharp alarm will be heard when someone opens door or window in arming status,The reed switch is an electrical switch operated by an applied magnetic field. Keep your home safe with this door security alarm.

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