HI 98501-1 is a compact meter with direct probe, suitable for temperature measurements in semisolid samples and soil, for liquid testing in HVAC applications, boiler and industrial heating plants. The fast response time is also ideal for gas measurements.Specifications:Range -50.0 to 150.0°C Resolution 0.1°C Accuracy ±1°C Probe stainless steel105 x dia 3 mm (4.1 x dia 0.1") Battery Type / Life 1 x 1.5V / approx. 3000 hours of continuous use Environment 0 to 50°C (32 to 122°F); RH max 95% Dimensions 66 x 50 x 25 mm (2.6 x 2.0 x 1.0") - meter only Weight 50 g (1.8 oz.) - meter only