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How to connect an external relay to Output 2 on a Cellswitch Infinity


Output 2 is an ‘open collector’ output which means it gives 0V to whatever it is connected to while it is switched on.
To drive heavier loads, connect the one end of the coil of an external (12/24VDC coil) relay to 12/24V DC and the other end of the external relay’s coil to Output 2. If Output 2 is switched on, it will supply 0V to the relay and turn it on.

Connection Diagram

External relay on Open collective output- Cellswitch Infinity_switch

External Relay connected to a switch

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