Kit includes dual-input thermometer with 2 K-type temperature probes (air liquid probe and KSP2 heavy duty surface probe), and 2 K-Type thermocouples. Supplied in durable carry pouch. Designed to take temperature measurements in hot water systems above 60°C, and below 20°C in cold water systems. KSP2 surface probe lead range -50 to 500°C. Measures Air, Liquid & Surface Temperatures Accurate to Celsius & Fahrenheit Temperature Range -50°C to 1200°C LCD Display Data Hold Function Manual Field Calibration IP51: Not Water-Resistant 2 Year Guarantee Measures Air, Liquid & Surface Temperatures Accurate to Celsius & Fahrenheit Temperature Range -50°C to 1200°C LCD Display Data Hold Function Manual Field Calibration IP51: Not Water-Resistant 2 Year Guarantee