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Magnetic Lock Door Test | Electric Magnetic Door Lock by Junson Security

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October 16, 2026
Keyword: Electromagnetic Door Holder
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Tags:
#magnetic door catch #fire alarm magnetic door holders #floor mounted magnetic door holder
Video Description:
Get a guided demo that shows common workflows and troubleshooting tips for the JS-31 electric magnetic door holder. In this video, we walk through its wall-mount installation, test the 50kg holding force, and demonstrate the anti-residual magnetism release. You'll see how it automatically closes smoke-proof doors during fire alarms, how to use the built-in release button for testing, and how the MOV reverse current protection works. We also cover dual voltage 12/24VDC wiring and low-power operation. Ideal for B2B buyers evaluating electromagnetic door catches for single or double smoke-proof doors.
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