The easy to use EcoTemp digital thermometer features a large, easy to read LCD display with display hold & max/min memory functions. The unit measures temperature over the range of -49.9/+199.9 °C with a resolution of 0.1 °C or 0.1 °F. Both open circuit & low battery indication are displayed, when applicable. Each thermometer is supplied complete with a detachable, rigid, pointed, stainless steel penetration probe (3.3 x 120mm) with a 750mm PVC connecting lead, protective probe cover, battery & instruction card