Dnake S213M, User Manual, Page: 25 / 32

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Enable to connect equipment with RS485 interface.
Connect to the lock module (an independent power supply is necessary for the
lock).
5. Card Reader Interface
The interface can be connected to one IC/ID card reader or be used for reading
the information of built-in card reader.
Note: Door Station can only be connected to one card reader or management
device at a time.
Warning!
1. When connecting to an inductive load device such as a
relay or electromagnetic lock, you are recommended to use
a diode 1A/400V (included in the accessories) in anti-
parallel with the load device to absorb inductive load voltage
peaks. The intercom will be better protected in this way.
2. The load current of the relay cannot be greater than 2A.
See attached picture for more details.