Dwyer 668B-04-3 is a compact differential pressure transmitter with an accuracy of ±0.8% FS. It operates in temperatures ranging from 0 to 170°F and has a storage temperature range of -40 to 185°F. It requires a power input of 12-32VDC and can be connected via a terminal strip. The transmitter offers multiple output signal options including 4-20 mA, 0-10 VDC, and 0-5 VDC. Zero and span adjustments are easily accessible under the small terminal cover. It is designed for use with air and non-conductive gases and has a pressure limit of 15 psig. The process connection is 3/16" OD barbed brass for 1/8" ID push-on tubing. The enclosure is made of stainless steel and PC+ABS alloy, UL 94 V-0 rated. It has a thermal effect of ±0.03% FS/°F and a compensated range from 40 to 170°F.