Dwyer 668B-19-1 is a compact differential pressure transmitter suitable for air and non-conductive gases. It has an operating temperature range of 0 to 170°F (-18 to 77°C), and offers an accuracy of ±0.8% FS. It requires a power input of 12 to 32 VDC and has multiple output signal options, including 4 to 20 mA (2-wire), 0 to 10 VDC (3-wire), and 0 to 5 VDC (3-wire). The transmitter features accessible zero and span adjustments, and comes with a stainless steel and PC+ABS alloy enclosure, UL 94 V-0 rated. It has a pressure limit of 15 psig (1.0 bar) and a process connection of 3/16" OD barbed brass for 1/8" ID push-on tubing. The thermal effect is ±0.03% FS/°F (±0.054% FS/°C) and it is compensated within the range of 40 to 170°F (4.4 to 77°C).