Update: You can customize brightness through your phone by connecting via Bluetooth with MarsPro App Control. (Insert iConnectu into dimmer box is not include, must be purchased separately.) The Mars Hydro TSL2000 provides perfect rectangular lighting coverage for 4-6 indoor plants and for decorative Floral Shelves as well. Its affordable price, intuitive yields, dimming and daisy chain function guarantees its abilities. The overwhelming choice for most growers applying in grow tent, small room, cabinet & closet, and plant shelves. Mars Hydro TSL 2000 Features Low Power Consumption LED Grow Light: Consuming 300w as well as mounted with 704 pcs chips, TSL2000 can be the alternative of a 400w HPS light while saving 25% electrical power. High Performance LED Grow Light: With a total light output PPF 717umol/S and also a PPE of 2.6 umol/j, it's 50% more photon effective and can promise a 30% more return than the old HPS/MH lights. Patent Reflective Hood Design: The reflector shape on TSL2000 is patented and can efficiently generate light that is dispersed in all directions to boost its light utilization and aid plants get more light absorption. Full Spectrum Plants Favorite Spectra: It has a unique mix of spectra that gives most light in the 400-700nm waveband, incredibly conducive to photon-assimilation. Adequate IR(730-740nm) is also added in the spectra to yield larger buds. Dimming And Daisy Chain Feature Available: By using a separate dimming knob on the external driver, supporting 0-100% settings adjustment and as many as 15 LEDs daisy-chained in a group, it supplies different light levels for various plant stages while reducing energy waste. Safety Qualifications and Warranty: CE, ETL, RoHS, UKCA security qualifications approved, 50,000 hours long lifespan, 5-year warranty guarantee, and local after-sales service centers. Spectrum PAR More information Mars Hydro Catalog Specs Wattage draw: 120V: 300 watts ± 5% 240V: 298 watts ± 5% Amps: 2.550A@AC120V 1.311A@AC240V 1.135A@AC277V HID equivalent: 450 watts Driver: MOSO LEDs: 704 BridgeLux chips, 660-665nm 730-740nm 3000-3200K 6000-6500K LED Lifespan: 50,000 hours Spectrum: Full spectrum for seed to flower growth Coverage area: Veg: 3' x 5' Flower: 2' x 4' PPF: 778umol/S PPE: 2.4μmol/j BTU: 1023 Dimmable: Yes Thermal management: Passive cooling Daisy chain: Yes Max Yield: 2.3g/watt Operating/input voltage: AC100-277v Amps: 120V: 2.550A 240V: 1.311A 277V: 1.135A Product weight: 7.8 lbs Dimensions: 40.07" x 9.97" x 2.51" Certifications: UKCA, CE, RoHS, ETL Recommended height above plants: Seedling: 18" @ 50% Veg: 18" @ 75% Flower: 12" - 18" @ 100% Product includes: Grow light Power cord Wire hangers Ratchet hangers Recommended for: Grow tents; Indoor grow operations; Soil, hydroponic, aeroponic, or aquaponic systems Manufacturer's Warranty: 5 years