Azbil Model SL1-_ _ General Purpose Compact Horizontal Limit Switches offer a robust, long-life, and maintenance-free design with a mechanical life of 20 million operations, owing to a two piece-spring mechanism. These maintenance-free switches have a superior seal: oil-resistant/immersion-proof type (JIS) and IP67 (IEC). O-ring and integral diaphragm seal is built-in. The small, space-saving body can be tightly gang-mounted and have high sensitivity (movement differential = 0.1 mm). Contact form sing-pole double-throw (SPDT). Contact type- standard load type: pure silver rivet, low current load type: gold-plate rivet, M3 screw terminal, UL/CSA/GB (CCC marking) certified models available. Rugged models are also available.