Actron's IR Thermometer PRO is an extremely versatile tool that measures the surface temperature of just about anything - perfect for both do-it-yourselfers and professional technicians. Use to monitor home, commercial, and automotive A/C systems, troubleshoot automotive and household components and systems, find electrical shorts, and even measure the burner temperatures of kitchen stoves! Simply press a button, aim the Infrared Thermometer PRO at the target - the built-in laser pointer will guide the way - and read the temperature display - it's that easy! Its innovative optical lens delivers highly accurate measurements over a wide (-58F to 932F (-50C to 500C)) temperature range with a 10:1 distance to spot (D:S) ratio. Accurate to /- 4 degrees F (2 degrees C). Features: backlit LCD display, temperature in Fahrenheit or Celcius, automatic data hold, visual low battery indicator, and belt holster. Requires two AAA batteries (included). AUTOMOTIVE USES INCLUDE: detecting overheating electrical components, connectors & wiring harnesses; pinpointing radiator core restrictions; temperature sensors; catalytic converters; exhaust systems; fuel systems, battery, brake, oil, and tire tread temperature. ELECTRICAL USES INCLUDE: Checking temperature of high voltage equipment and transformers from a safe distance, detecting heating of problem fuses, wires, insulators, connectors, splices, switches, and neutrals. HVAC/R USES INCLUDE: furnace exteriors; steam traps; heat exchangers; ambient temperature; outlet air; inlet air; refrigeration equipment; freezers and display cases; AC condensers; blockages; chiller input/output CT; and average over condenser coil for energy audit.