Single set point, fixed deadband, SPDT switches feature 316 stainless steel systems for long-lasting performance—even in harsh environments. Choose direct-mounting units with rigid probes—great for use with 3/8" nominal bore thermowells in areas with high vibration or pressure. Remote-mount switches have spring-mounted capillaries with 302 stainless steel armor and include a 1/2" NPT(M) bushing adapter.