TCBunny LED Replacement Light Bulb 921/T15 Wedge base 52 Lumens 12v or 24v Natural White (12 Pcs) 60,000 hours life expectancy 11-18 volts DC including 12v and 24v; the wide-range voltage is designed to withstand RV power fluctuations LED Replacement light bulb for bulbs with 921/T15 Wedge base Low heat, safe to touch, and instantly bright Energy efficient and eco-friendly