Dwyer DHC-002 is a Digihelic® Differential Pressure Controller with a temperature range of -4 to 158°F (-20 to 70°C). It offers a high level of accuracy, with ±0.5% FSO for most ranges, except 0.5 in w.c. @ ±1% FSO and ranges below ±0.25 in w.c. @ ±1.5% FSO. It can be powered by 12-28 VDC or 12-28 VAC 50 to 400 Hz. The controller features a 400 ms response time, NEMA 4X enclosure rating, and a 15 pin male high density D-sub electrical connection. It provides a 4-20 mA output signal and has accessible zero and span adjustments. The controller is suitable for air and non-combustible gases and offers a backlit LCD display and LED setpoint indicators. It has a polycarbonate material construction and can be mounted in any orientation.