The Amprobe AM-520 Digital Multimeter is designed for the HVAC professional, the AM-520 HVAC Digital Multimeter is complete with key functions such as temperature, micro amps used for flame sensor troubleshooting and capacitance to check motor start-up capacitors. The AM-520 measures a complete range of electrical parameters and features a built-in flashlight, a "third hand" probe holder and VolTect™ non-contact voltage detection.