Bonlux 3W G4 LED Light Bulb 12V AC/DC - G4 Bi-pin Base Ceiling Puck Light T3 JC Type 30W Halogen Bulb Equivalent Daylight 6000K for RV Motorhome Caravan Marine Boat Lighting (5-Pack) 12V G4 Bi-pin LED bulb perfect for replace T3 JC type G4 Halogen Track Bulb; AC/DC 12V G4 LED Light. Compatible with AC 12V and DC 12V. No flickering if used with transformers whose wattage is matched with the LED bulb; 12V LED G4 bulb perfect for use in Closet Lights, Under-cabinet Lights, Ceiling Lights, Table Lights, Puck Lights, Accent Lights, Display and Landscape Lighting, RV Motorhome Camper Trailer Caravan Automotive Marine Boats Yachts Applications; Save electricity bill. Replace 30W halogen bulb by 3W LED G4 bulb. Save over 90% on electricity bill of lighting; Excellent heat dissipation with ceramic body, transparent plastic cover is an added safety feature.