The D1SL1 & D1Sl2 are signal lights used in a Heat Trace systems that indicates voltage presence at a power connection or end seal.
Explosion proof pilot light for use with HL-PC kit. Can be used as a power connection light or end seal light. Pilot light kit made with 3/4” NPSM threads and 8” flexible leads. Red LED lens. Available for 120V & 240V systems.























