The Sun System? 1 Etelligent digital lighting controller enables the grower to control up to 400 fixtures. Features an industry first?ability to control both the Sun System? 1 – 1000 Watt and Sun System? 1 LEC? 315 Watt Etelligent ballasts with the same controller, operating on separate channels. This two-channel controller allows daisy-chaining up to 200 fixtures per zone, enabling complete control of your growing environment with timed on/off switching, sunrise/sunset, accurate temperature readings with dual thermal probes and thermal-threshold auto dim-shutdown for additional protection. The complete kit includes 1 Etelligent Controller, 1 universal power adapter 5 ft/1.5 m cable, 2 each 16 ft/5 m signal wires with ferrites for connection from controller to ballast and 2 each 16 ft/5m temperature probes.