The Fluke 116C is a compact handheld multimeter from the 110 Series purpose-built for HVAC & refrigeration service, equipped with two HVAC-exclusive core functions: built-in temperature measurement and microamp range for gas furnace flame sensors, heating coils, fans and variable-speed air conditioner ECU troubleshooting. Slim lightweight ergonomic design fits single-handed operation, with 6,000-count True-RMS measurement to accurately capture distorted PWM waveforms from air conditioning variable-frequency drives.

Supplied with a K-type thermocouple as standard, it covers temperature testing from -40 ℃ to +400 ℃ for air ducts, heating elements and compressor surface readings. The dedicated 600 μA microamp range is engineered to test flame sensor current on gas-fired equipment. LoZ low-impedance voltage mode eliminates ghost stray induced voltage to prevent false open-circuit readings. A large white LED backlit LCD plus Min/Max/Avg long-term trend logging automatically captures short-duration idle and pulse signal fluctuations.