Viribright Benchmark LED linear retrofit kit LRK T8 with duel redundant safety switch DRSS is patent protected, in addition to its UL-certified status, The Viribright Benchmark LED T8 LRK features two safety switches which are designed to prevent electrical shock during the installation and retrofit of existing fluorescent fixtures, The installation of Viribright Benchmark LEDlinear retrofit kit LRK, is simple and requires only the ballast removal and a simple re-wire at the ballast insertion of the LED LRK, This allows theexisting wiring to remain intact, saving time and labor thus money, Our patented design prevents any electrical current form energizing the light tube before it is completely installed in the standard G13 shunted or non-shunted sockets, Viribright Benchmark LED linear retrofit kit LRK T8 are tested according to ULStandards to perform up to up to 50,000-hours on the LEDs and 25,000 hours on the integral lamp, Make sure when ordering LED linear T8 solutions to validate warranty claims such when based on hours of operation, Viribright Benchmark is one of only 2 dual end powered LED Linear T8 retrofit kits in the U, S, A, due to the patented DRSS safety switch systems, Dual end powered retrofits are the most common and most cost effective due to the nature of legacy or existing fixture wiring and construction, Color: DayLight, Color Temp K: 6,000K, Lumen: 2000lm, Lifespan: 25,000 Hrs, Beam Spread: 140, Input Voltage: 85-285VAC, Watts: 20W, Color Rendering Index: > 80, Base: G13, ONOFF times: >20,000, Operation Frequency: 60Hz, Operating Temperature: -20 to 45c, Storage Temperature: -40 to 85C, LED Modules: EpistarChimei, Certification: UL, Kind: DEP Dual End Powered with safety switch, SKU: VBTL054