Connect the 2 black wires together. Attach one red wire to a screw terminal on the relay and the other red wire to the other screw terminal of the relay. The output of the relay is a single pole single throw (SPST or form A) normally open switch.
Connect the 2 black wires together. Attach one red wire to a screw terminal on the relay and the other red wire to the other screw terminal of the relay. The output of the relay is a single pole single throw (SPST or form A) normally open switch.