Gold Stars 92100024 LED Replacement Light Bulb 921/T15 Wedge base 80 Lumens 12v or 24v Natural White 60,000 hour 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