The connection for fail-safe Lock devices：
Ex: the electromagnetic locks for example. Please connect the Com. and N. C. in series between power supply and electromagnetic lock. If the electromagnetic lock can't be opened because the proximity reader is out of order or unexpected accident happens, please switch to N. O. contact by the key to cut the power off and then the electromagnetic lock can be opened. |
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The connection for fail-secure Lock devices：
Please connect the Com. and N. O. of the key switch in parallel with the power supply and the electric lock (fail-secure mode). If the electric lock cannot be opened due to failure of proximity reader or other incidents, the user can switch to N. C. contact by the key, forcing the door to open.
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