The TRIGGER ONE is a solid state relay with built in Bluetooth connectivity. Simply unplug a standard relay and plug in the ONE. Once powered it can then be controlled via the free Trigger Plus app.

What is the purpose of a relay?

Relays are switches that open and close circuits electromechanically or electronically. Relays control one electrical circuit by opening and closing contacts in another circuit. As relay diagrams show, when a relay contact is normally open (NO), there is an open contact when the relay is not energized.

Will 5V trigger a 12v relay?

You cannot activate a 12Vdc relay with 5V.