The HONEYWELL part LS4A1A is a MICRO SWITCH™ Heavy-Duty Limit Switch from the HDLS Series. It features an epoxy-coated zinc housing and a side rotary design, making it suitable for heavy-duty applications. This specific model is a momentary switch with no lever, incorporating a 1NC 1NO Single Pole Double Throw (SPDT) snap action mechanism, providing reliable and precise switching. With a double break configuration, it offers enhanced durability and a long operating life. The switch has a 20 mm conduit for easy installation and is designed to operate in a wide temperature range from -12 °C to 121 °C [-10 °F to 250 °F]. It also boasts an IP rating of 65/66/67, ensuring protection against dust and moisture ingress, and is compliant with NEMA 1, 3, 4, 4X, 6, 6P, 12, and 13 standards. For added safety and reliability, this limit switch is agency approved by UL, CSA, CE, and CCC.