Dwyer TSW-150-NP Weatherproof Digital Temperature Switch is a reliable and accurate device for measuring temperatures from 32 to 104°F (0 to 40°C). With an accuracy of ±1% FS, it provides precise readings. The switch has a power requirement of 90 to 255 VAC or 12 to 24 VAC/VDC, and is enclosed in a NEMA 4X (IP66) rated enclosure. It features a 3-digit plus sign display and a single stage resolution of 1°. The switch is equipped with R1 and R2 SPDT relays with resistive loads of 20 A and 8 A respectively. It has a power consumption of 3.6 VA and supports PTC (1000 Ω @ 25°C) and NTC (10 KΩ @ 25°C) inputs. The switch has a non-volatile memory and a probe range of -58 to 302°F (-50 to 150°C) for PTC and -58 to 230°F (-50 to 110°C) for NTC. It operates on the on/off control type and has a horsepower rating of 2HP at 240 VAC.