Dwyer 3002MR Photohelic® Switch/Gauge is a versatile instrument with a temperature range of 20 to 120°F (-6.67 to 48.9°C). It offers high accuracy, with ±2% of FS for 3000-0 and ±3% of FS for 3000-00. The device operates on 24 VDC power, with an optional 24VAC. It has an 18" cable assembly and is suitable for air and non-combustible gases. The diaphragm is designed for vertical mounting, but other orientations can be accommodated upon request. The pressure limit ranges from -20" Hg to 25 psig, with options for higher pressures. The process connection is 1/8" female NPT, and each setpoint has a solid state relay switch. The instrument is easy to adjust with adjustable knobs on the face. It has a compact size, with a 4" dial face and dimensions of 5" OD x 3-1/8".