The Fluke 116 was specifically designed for HVAC professionals. It has everything you need to quickly troubleshoot problems with HVAC equipment and flame sensors, including a built-in thermometer to measure temperatures up to 400°C (752°F) and microamps to test flame sensors. The Fluke 116 also measures resistance, continuity, frequency, and capacitance. And the large white LED backlight makes it easy to see results even in poorly lit areas.