Whelen Responder LP Series Super LED Mini Lightbar. Now, a low profile minilightbar that provides all the high performance LED warning and signalling benefits, in a smaller size that fits all your special applications. Super-LED modules in a rugged aluminum or polycarbonate base are built to take the roughest conditions and long hours you face. They're road tested, vibration and moisture resistant and use a much lower current than other warning lights. Put a Responder LP to work on your utility, security, fleet, construction or public works vehicle.