Large 1 inch Continuous Display, easy to read from Over 20 feet. Battery Operated. Factory Calibration Lot Traceable to NIST. Direct Replacement for Bimetal, Mercury, Glass, Bulb, and Capillary Thermometers. Temperature Ranges of 200 to 800°F and 100 to 425°C. Easy to Install. NEMA-4x Stainless Housing. Hose-Down Proof, Vibration Tolerant. Optional RTD or Thermocouple Output. 4-20mA Transmitter with Local Display, Loop Power. Selectable Stems, Integral or Remote. Display Resolution of 1°F or °C. Meter Accuracy Display & Loop @ 75°F of ±2° : 200 to 600°F, ±4°F : elsewhere ±2°C. Internal Point Calibration. Ambient Temperature Rated Accuracy Operating 20 to 130°F (-7 to 54°C) with Alkaline Batteries, 20 to 158 °F (-7 to 70°C) with LIthium Batteries. Ambient Temperature Coefficient of 0.04 deg/deg from 75°F. Meter Case, Fittings, Stems of 300 Series Stainless Steel. Window and Molding of Polycarbonate. Gasket of Silicone, O-Ring Sealed. Housing Rating NEMA 4-x. Dimensions: 5.3"W x 4.3"H x 2.7"D (13.5 x 10.9 x 6.9 cm). Weight:2 lbs. (1 kg)