Twin inputs, for all HVAC usage including flow and return temperature measurements and radiator output checks * Available in a kit with 2 x SK29M, 1 x SK21M, 1 x AK27M probes and carrying case, ref: KM340KIT * Displays temperature in °C or °F * 1° resolution * Maximum temperature memory, hold function to freeze displayed reading and a protective slip-on boot with desk stand * Sub-miniature connector Sensor Type Measurement Range Scales Resolution Accuracy at +23°C/+73°F -50°C to 0°C, -58°F to +32°F 0°C to 1100°C, +32°C to +1999°F Operating Temperature Range Connector Type Battery Type Battery Life Thermocouple Type K -50°C to +1300°C, -58°F to+1999°F °C, °F 1° +2,-1°C/+4,-2°F ±(0.2% of reading +1°C/2°F) 0°C to +50°C, +32°F to +122°F Sub-miniature 9V IEC 6LF22 alkaline 200 hours