Dwyer MP-003 Mini-Photohelic® Differential Pressure Switch/Gauge is a versatile product that operates within a temperature range of 20 to 120°F (-6.7 to 49°C) with an accuracy of ±5% FS @ 70°F (21.1°C). It can be powered by 24 VDC / 24 VAC, and has screw type terminal connections for easy installation. This switch/gauge is suitable for air and non-combustible, compatible gases and offers a pressure limit of 30 psig (2.067 bar). Additionally, it features (2) SPDT relays for switching and push buttons for set point adjustment. The compact dimensions of 4-1/8" depth x 3-1/16" diameter further enhance its convenience, and it comes with standard accessories including mounting screws and a .050" hex allen wrench. Ideal for a variety of applications, this product guarantees reliable performance.