my door mag is buzzing

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If a magnetic lock is buzzing or noisy it could be the result of an AC component riding on the DC supply voltage. Using a meter, check for AC riding the DC level. If possible test the mag lock wit...
Rattling could be caused by improper mounting of the mounting plate or armature. Make sure all components are properly secured.
One Deleay Egress Controller (DE5101) can run two mag locks on a pair of doors, provided the doors are not controlled independently
 AC-voltage or "noise" on a power line can cause hum. Ensure supply is filtered and regulated 12 or 24 volts.Not a transformer.Also ensure hardware is properly secure eliminating the poss...
Some transformers in the power supplies provide a little humming noise and that is normal. If the humming in Von Duprin PS873 power supply is loud follow these steps. Remove the load from the outp...