Our top of the line True RMS Stick Meter, the HS36, includes the ranges you use everyday for HVAC/R field service plus includes a bright blue backlight and True RMS. Like the rest of the HS30 series, the HS36 comes equipped with a magnetic hanger, along with detachable silicone test leads and alligator clip probe tips for remote and easy one-handed testing, as well as the full set of built-in safety features. This auto-ranging stick meter also includes a bar graph on the LCD for an analog feel. Technicians who prefer our expandable stick meters say this is the best digital multimeter for HVAC/R field Service. The HS36 works with all Fieldpiece accessory heads enabling the user to test a wider variety of parameters from a single meter. All this plus the removable tip test leads and alligator probe extensions make safe one-handed testing a snap. True RMS allows you to test true voltage and amperage on non-sinusoidal waveform lines such as those found on variable speed fan motors and more. As with all electrical testing, please read the Operator's Manual and associated safety practices thoroughly before testing and adhere to industry best practices for safety when testing any current carrying device.