Photo 1 of uxcell Rolling Door Contact Magnetic Reed Switch Alarm with 3 Wires for N.O./N.C. Applications OC-55

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Photo 1 of uxcell Rolling Door Contact Magnetic Reed Switch Alarm with 3 Wires for N.O./N.C. Applications OC-55Photo 2 of uxcell Rolling Door Contact Magnetic Reed Switch Alarm with 3 Wires for N.O./N.C. Applications OC-55