PROEL KDC1905 - Page 62

Switching on the bulb,
opening the door, etc.
Second button control of the device
Diagram version: Satellite power supply from the PBX transformer
Example of using OC1 connector
The common power supply of two cassettes should be used only when the devices are not far from each other (maximum 3m).
Cables with very low resistance should be used to line cables marked in red.
The coil of external relay should be protected by a polarized diode as shown in the picture, or by a zener diode of rated voltage up to 30V.