iCentral System One M200 Installation Manual page 25

Wiring the Lock and Chime Outputs
The Lock output (LK) and Chime (voltage) output (CH) will provide 12 Volt DC @ 50mA which
can be used to power up relays which in turn will switch voltage to the device being used.
Note: Both these outputs are designed to drive a load, with a resistance of not less than 240 ohm.
Check the coil resistance of the relays to be used with a multimeter.
Powering Relays from Lock from Lock and Chime Outputs
Lock Output
The LK terminal provides an output voltage (to activate an automatic gate or release an electric
door strike) whenever the LOCK button is pressed at the Master or any Room Station (after
communicating to the door station).
For an electric door strike, power can be taken from the door station or from a separate power source
depending on the resistive load represented by the lock – See following diagrams for further detail.
Operating Automatic Gates
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