Growlush understand that safe and reliable grow lighting control is an essential factor when it comes to indoor gardening. All gardeners require the peace of mind that their HPS/HID grow lights are switched on and off at the correct intervals and that this is achieved with a safe and reliable heavy duty contactor. Any indoor gardener should be using lighting contactors to control their indoor HPS/HID grow lights, as standard interval timers just aren't up to the challenge. These lighting contactors by-pass the electrical load away from the built in timer, this allows for efficient control of the amount of time your lights are on and off for. Professional 24hr, 48 segment timer, interval is 15 minutes Universal wall hanging bracket Sturdy and robust powder coated case Supplied with 2 x 1.2m heavy duty plug-in main lead (one for each side)