【Preheat Startup Design】Preheats filaments before ignition, minimizes current shock and shortens startup time
【Heavy-Duty Aluminum Shell】Premium aluminum housing resists corrosion and impact, ideal for commercial and residential use
【4-20 Watts Wide Compatibility】Works with all 4-20 watts preheat fluorescent light bulbs, versatile for various lighting setups
【Hassle-Free Replacement】No tools required. Just cut the power, twist and pull out the faulty starter, then twist the new one into the socket until locked