type ELS-950M switches represent Gems’ most compact alloy-housed electro-optic level sensors. They monitor a broad range of media including OHV type fluids. The UL-approved design features brass housing, fused glass prism, and TPE insulated wires. The ELS-950M series provides a durable, water tight, and environmentally resistant assembly - ideally suited for use in harsh environments including outdoors and engine bays. In addition, the ELS-950M series offers excellent temperature and pressure capabilities.