LT-4's are tough to find these days- I had to go thru several vendors last time I needed an LT-8.

NGW makes a similar unit.

Cap makes a " trigger relay", which uses 120v from your timer to trip either 120 or 240 relays built into a piggyback cord.

I'd def. centralize your lighting control- 1 room, 1 timer.
rhizome Reviewed by rhizome on . Yikesssssssss!!! One timer was not set correctly... one of three lamps stayed on! Fucking shiat. One of my three 1000 watt lamps stayed on two additional hours today. I am three weeks into veg right now, was going to induce flowering in about four-five days. Am I going to have a problem on my hands? I know probably a bunch of threads have been posted like this, but I'd like to hear people's experiences from the past. Yesterday we had a power problem and the lights stayed off two additional hours, and then today one of the three lamps stayed *on* two extra hours. Rating: 5