The TP-RLB1-SPDT-V2 is a 12VDC/ 24VDC dual buffered input PCB mounted relay. Program input voltage is12VDC or 24VDC to the nominated terminals observing correct polarity. The relay can be triggered on either + or - trigger input terminal. Applying a positive voltage between 5V to 27V or 0V to the respective terminals will activate the relay and will deactivate upon removal of the trigger voltage. Triggered input will be indicated by the on-board red LED. The relay is fitted with SPDT relay contacts NC,C,NO which have a contact rating of 6A at 30VDC.