The HONEYWELL part 1SE401 is a miniature environmentally sealed basic switch, perfect for applications that require reliable performance in harsh environments. This switch is a single pole double throw (SPDT) with gold-plated bifurcated contacts, ensuring superior electrical conductivity and long-lasting performance. It features a stainless steel pin plunger for precise actuation and durability. The switch is equipped with (3) 305 mm [12 in] lead wires for easy installation, and it is designed to withstand a wide temperature range of -53 °C to 105 °C [-65 °F to 221 °F]. Whether in extreme heat or cold, this HONEYWELL switch will deliver consistent and dependable performance.