Switch Every Light in the Room From One Timer, SafelyThe Timer Box Pro is a contactor timer for grow rooms: a steel box with a built-in 24-hour segment timer, a heavy-duty contactor and a row of switched UK sockets, plus a separate labelled heater socket. The timer drives the contactor, and the contactor carries the load, so several grow light ballasts come on and off together without overloading an ordinary plug-in timer. Choose 4 Way, 6 Way or 8 Way to suit the size of your room.Key Benefits Contactor switching - the timer only operates the contactor, so it is not burnt out by the start-up draw of HID ballasts. All lights in sync - every light socket switches at exactly the same moment. Individually switched sockets - turn one light off without touching the rest. Dedicated heater socket - a clearly labelled outlet for a grow room heater. All-metal case with a hanging bracket for wall or frame mounting. Load guide: 4 Way up to 4 x 600W or 3 x 1000W; 6 Way up to 6 x 600W or 4 x 1000W; 8 Way up to 8 x 600W or 4 x 1000W. Why Not Just Use a Plug-In Timer?A household timer is rated for a lamp, not a bank of grow light ballasts. The inrush when several lights strike at once can weld its contacts, leaving lights stuck on or off and upsetting the photoperiod. A contactor timer puts that load on a switch built for it.How to Use Hang the box on a wall or frame, away from water, using the bracket. Plug each ballast or LED driver into a switched socket and keep the total within the load guide above. Plug the heater into the socket marked HEATER. Set the on and off times by pushing in the timer segments, then plug the Timer Box into the mains. Technical Specifications Brand: Timer Box Model: Timer Box Pro with heater socket Versions: 4 Way, 6 Way, 8 Way Timer: 24-hour mechanical segment timer Switching: contactor controlled Light sockets: UK 3-pin, individually switched Extra outlet: 1 x heater socket Case: metal, with hanging bracket