A magnetic lock needs power and contact. If the door is not holding, first check whether the system has power. Look for an indicator light on the power supply, access controller, keypad or reader if the equipment has one. Confirm that the outlet, transformer or breaker feeding the system has not been switched off.

Do not connect a phone charger or substitute supply to an installed magnetic lock. A matching voltage label does not establish the required power quality, capacity or compatibility with the release controls. A qualified technician can test power at the lock under its operating load using the manufacturer's procedure, while accounting for the complete entry and exit arrangement. Any temporary diagnostic setup must be removed and the normal release functions checked before the entrance returns to service.

Also inspect the contact between the magnet and the armature plate. The plate must meet the magnet squarely. A sagging door, loose bracket, warped frame or changed closer adjustment can prevent full contact even when power is present. If the door moves or rattles, the lock may look weak while the real issue is alignment.

Call for service if power is present but the magnet does not hold, if the system releases at the wrong time, or if wiring appears damaged. Send photos of the magnet, the plate, the door closer, the keypad or reader and the power supply area. Include the property type and ZIP code.