4' LED Bar with 4x Spectrum Channels (White+ Deep Red+ Far Red+ UV) for Model One LED System, TLB-1, is an advanced 4' LED light bar that includes four spectrum channels, including full spectrum , deep red, far red, and UV. When connected to a TrolMaster controller, the TLB-1 can replicate natural sunlight properties by allowing the user to adjust the actual light spectrum. Each TLB-1 provides 90 watts of light , effectively meeting the needs of ALL phases from vegetative to flowering.