that's it there. I think my light blew both timers because they don't seem to work on any devices that plugs in anymore. The timer was working on my led light. But as soon as I plugged the hps in it stopped workingUser manual? Model? Google?
I've had a couple with a switch on the side, to activate the timer. Also one's where you set both on and off times as a separate timer.
Maybe something like that?
Otherwise no idea lol, get a different timer.