The Kele DPA3 Series Differential Low Pressure is based on a piezoresistive, silicon sensing element which senses Differential Pressure and provides an analog output. The hinged cover on the DPA3 can be easily opened using the integrated locking tab on the side of the enclosure. This allows for easy access to the zero function and field selectable ranges and outputs. The DPA3 Series also includes an optional, five digit LCD for installation and monitoring support. The standard accuracy of this series is ±0.5% FSO. Field selectable analog outputs include 0-5 and 0-10 VDC, or 4-20mA which correlate to a uni or bidirectional pressure range from 0-0.1 in up to 0-40 in of water column, depending on your model selection. Each unit has up to 8 field selectable, uni or bidirectional ranges. Kele is the leading supplier of building automation products. When you need the right product, right now, count on Kele.