Dwyer TSW-250 is a weatherproof digital temperature switch suitable for temperatures ranging from 32 to 104°F (0 to 40°C). It offers an accuracy of ±1% FS and has a power requirement of 90 to 255 VAC or 12 to 24 VAC/VDC. Its NEMA 4X (IP66) enclosure rating ensures protection against environmental factors. With a 3 digit plus sign display and non-volatile memory, it provides reliable temperature control. The switch has a dual-stage resolution of 0.1° < 100 and 1° = 100°. It features R1 and R2 SPDT relays, with resistive loads of 20A and 8A respectively, and an inductive load of 3A. The switch consumes 3.6 VA of power and has a PTC probe range of -58 to 302°F (-50 to 150°C) and an NTC probe range of -58 to 230°F (-50 to 110°C). It operates on on/off control and has a horsepower rating of 2HP @ 240VAC for R1.