{"product_id":"lumii-black-contactor-timer","title":"LUMii BLACK Contactor Timer – Grow Room Light Timer","description":"\u003ch2\u003eSwitch a Bank of Grow Lights Safely From One Simple Timer\u003c\/h2\u003e\u003cp\u003eThe \u003cstrong\u003eLUMii BLACK Contactor Timer\u003c\/strong\u003e pairs a \u003cstrong\u003emechanical 24-hour timer\u003c\/strong\u003e with a \u003cstrong\u003erelay switch\u003c\/strong\u003e, so every light plugged into it comes on and goes off together. The timer only tells the relay when to switch and the relay carries the load, so the start-up surge from \u003cstrong\u003eHID ballasts\u003c\/strong\u003e never passes through the timer. Ballasts plug into lightweight, flexible \u003cstrong\u003e4-socket power bars\u003c\/strong\u003e – one on the \u003cstrong\u003e4 Way\u003c\/strong\u003e, two on the \u003cstrong\u003e8 Way\u003c\/strong\u003e – each rated at \u003cstrong\u003e13 A\u003c\/strong\u003e. It is a simple, low-cost way to automate the light cycle in a grow tent or grow room.\u003c\/p\u003e\u003ch3\u003eKey Benefits\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eProtects the timer\u003c\/strong\u003e – the relay takes the ballast start-up current, not the timer contacts.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e15-minute programming\u003c\/strong\u003e – push down a pin for each on period around the \u003cstrong\u003e24-hour\u003c\/strong\u003e dial.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e13 A per power bar\u003c\/strong\u003e – up to \u003cstrong\u003e3 × 600 W\u003c\/strong\u003e, \u003cstrong\u003e4 × 400 W\u003c\/strong\u003e or \u003cstrong\u003e4 × 315 W\u003c\/strong\u003e lights on each 4-socket bar.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOn, off and timer modes\u003c\/strong\u003e – override the schedule by hand while you work.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlexible power bar\u003c\/strong\u003e – sockets sit by the ballasts, with no extension leads across the floor.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eWhy Plug-In Timers Fail Under Grow Lights\u003c\/h3\u003e\u003cp\u003eAn HID ballast draws a sharp surge of current each time it strikes. Plug several into an ordinary segment timer and those surges pit and weld its contacts until lights stick on, stay off or drop out mid-cycle. Missed or doubled light periods upset the photoperiod and stress plants through vegetative growth and flowering. With a contactor, only a small control current runs through the timer and the relay switches the heavy load, so the schedule you set is the one your plants get.\u003c\/p\u003e\u003ch3\u003eHow to Use\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSet the timer:\u003c\/strong\u003e push down a pin for every 15 minutes the lights should be on, then turn the dial to the current time.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSelect timer mode:\u003c\/strong\u003e move the switch to its centre position.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConnect the lights:\u003c\/strong\u003e plug ballasts or LED drivers into the power bar within the per-bar limits above.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower up:\u003c\/strong\u003e use a \u003cstrong\u003e13 A\u003c\/strong\u003e wall socket for each power bar, never an extension lead or adaptor.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePosition it safely:\u003c\/strong\u003e keep the unit and power bar off the floor, clear of water and irrigation lines.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cdiv class=\"hcs-specs\"\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e LUMii (BLACK range)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e contactor timer – mechanical timer with relay switch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTimer:\u003c\/strong\u003e 24-hour mechanical dial, programmable in 15-minute increments\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSwitch modes:\u003c\/strong\u003e on, off and timer\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOutputs:\u003c\/strong\u003e UK 3-pin sockets on flexible 4-socket power bars, 13 A per bar – 4 Way: one bar (4 sockets); 8 Way: two bars (8 sockets)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRecommended maximum per 4-socket bar:\u003c\/strong\u003e 3 × 600 W, 4 × 400 W or 4 × 315 W\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e8 Way at that maximum:\u003c\/strong\u003e 6 × 600 W, 8 × 400 W or 8 × 315 W across its two bars\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMains input:\u003c\/strong\u003e one 13 A UK plug for each power bar – the 8 Way needs two 13 A wall sockets\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSuitable for:\u003c\/strong\u003e HID ballasts (HPS, MH and CDM\/CMH) and LED grow lights on UK plugs\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHousing:\u003c\/strong\u003e enclosed unit with a clear timer cover and cable glands\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cdiv class=\"hcs-faq\"\u003e\n\u003cdetails style=\"border:1px solid #e6e6e6;border-radius:8px;padding:12px 16px;margin:0 0 8px;\"\u003e\u003csummary style=\"cursor:pointer;font-weight:600;\"\u003eHow many lights can I run from one power bar?\u003c\/summary\u003e\u003cp style=\"margin:10px 0 0;\"\u003eLUMii recommend no more than three 600 W, four 400 W or four 315 W lights on each 4-socket power bar. That keeps the bar inside its 13 A rating with headroom for the ballasts' start-up current.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails style=\"border:1px solid #e6e6e6;border-radius:8px;padding:12px 16px;margin:0 0 8px;\"\u003e\u003csummary style=\"cursor:pointer;font-weight:600;\"\u003eCan I use it with LED grow lights?\u003c\/summary\u003e\u003cp style=\"margin:10px 0 0;\"\u003eYes. Any grow light on a standard UK plug can be switched, as long as the total stays within 13 A per power bar. LED drivers also draw a brief surge at switch-on, so the relay protects the timer in an LED room too.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails style=\"border:1px solid #e6e6e6;border-radius:8px;padding:12px 16px;margin:0 0 8px;\"\u003e\u003csummary style=\"cursor:pointer;font-weight:600;\"\u003eCan one unit run two different light schedules?\u003c\/summary\u003e\u003cp style=\"margin:10px 0 0;\"\u003eNo. Every socket follows the one timer. A vegetative area and a flowering area on different photoperiods each need their own contactor timer.\u003c\/p\u003e\u003c\/details\u003e\n\u003c\/div\u003e\u003ch3\u003eWorks Well With\u003c\/h3\u003e\u003cdiv class=\"hcs-related\" style=\"display:flex;flex-wrap:wrap;gap:10px;margin:12px 0 0;\"\u003e\n\u003ca href=\"\/products\/lumii-black-600w-magnetic-ballast\" style=\"flex:1 1 240px;display:flex;align-items:center;gap:12px;padding:10px 12px;border:1px solid #e6e6e6;border-radius:8px;text-decoration:none;color:inherit;background:#fff;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0748\/7127\/5786\/files\/lumii-black-600w-magnetic-ballast-1.jpg?v=1790229711\u0026amp;width=160\" alt=\"LUMii BLACK 600W Magnetic Ballast\" width=\"64\" height=\"64\" loading=\"lazy\" style=\"width:64px;height:64px;object-fit:contain;flex:none;\"\u003e\u003cspan style=\"font-size:14px;line-height:1.4;\"\u003e\u003cstrong style=\"display:block;\"\u003eLUMii BLACK 600W Magnetic Ballast\u003c\/strong\u003e\u003cspan style=\"color:#008d37;\"\u003eSame BLACK range – plug it into the power bar\u003c\/span\u003e\u003c\/span\u003e\u003c\/a\u003e\u003ca href=\"\/products\/lumenlite-315w-cmh-magnetic-ballast\" style=\"flex:1 1 240px;display:flex;align-items:center;gap:12px;padding:10px 12px;border:1px solid #e6e6e6;border-radius:8px;text-decoration:none;color:inherit;background:#fff;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0748\/7127\/5786\/files\/lumenlite-315w-cmh-magnetic-ballast-default-title-1.jpg?v=1790229667\u0026amp;width=160\" alt=\"LumenLite 315W CMH Magnetic Ballast\" width=\"64\" height=\"64\" loading=\"lazy\" style=\"width:64px;height:64px;object-fit:contain;flex:none;\"\u003e\u003cspan style=\"font-size:14px;line-height:1.4;\"\u003e\u003cstrong style=\"display:block;\"\u003eLumenLite 315W CMH Magnetic Ballast\u003c\/strong\u003e\u003cspan style=\"color:#008d37;\"\u003eRun up to four 315 W CMH lights per bar\u003c\/span\u003e\u003c\/span\u003e\u003c\/a\u003e\u003ca href=\"\/products\/lumii-black-blade-200w-led-grow-light\" style=\"flex:1 1 240px;display:flex;align-items:center;gap:12px;padding:10px 12px;border:1px solid #e6e6e6;border-radius:8px;text-decoration:none;color:inherit;background:#fff;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0748\/7127\/5786\/files\/lumii-black-blade-200w-led-grow-light-1.jpg?v=1790229719\u0026amp;width=160\" alt=\"LUMii BLACK Blade 200W LED Grow Light\" width=\"64\" height=\"64\" loading=\"lazy\" style=\"width:64px;height:64px;object-fit:contain;flex:none;\"\u003e\u003cspan style=\"font-size:14px;line-height:1.4;\"\u003e\u003cstrong style=\"display:block;\"\u003eLUMii BLACK Blade 200W LED Grow Light\u003c\/strong\u003e\u003cspan style=\"color:#008d37;\"\u003eLED fixtures switch from it as well\u003c\/span\u003e\u003c\/span\u003e\u003c\/a\u003e\n\u003c\/div\u003e","brand":"LUMii","offers":[{"title":"4 Way","offer_id":53930866311434,"sku":"LGT-LUII-013-01","price":49.9,"currency_code":"GBP","in_stock":false},{"title":"8 Way","offer_id":53930866344202,"sku":"LGT-LUII-013-02","price":69.9,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0748\/7127\/5786\/files\/lumii-black-contactor-timer-4-way-1.jpg?v=1792276140","url":"https:\/\/hydrocropshop.co.uk\/products\/lumii-black-contactor-timer","provider":"Hydro Crop Shop","version":"1.0","type":"link"}