Klein Tools CL320 Clamp Meter is an automatically ranging true root mean square (TRMS) digital clamp meter that measures AC current and NCVT via the clamp, AC/DC voltage, DC microamps, resistance, continuity, frequency, capacitance, and tests diodes via test-leads, and temperature via a thermocouple probe. Features include Auto Range to improve efficiency and speed when making measurements; Diode Test to troubleshoot malfunctioning diodes; Max/Min to understand the variability from average of an electrical property being measured, and DC Microamps measurements when working with flame sensors. Jaw Size 1.6" (4.1 cm) Display 4000 Count Backlit LCDAC Voltage 600V Frequency 10 Hz -60 kHz Material ABS/Electronics Type HVAC TRMS Clamp DC Micro-Amp 200 μA Current 400 A AC Batteries 3 x AAA Drop Protection 6.6' (2 m) Special Features Automatically Ranging True Root Mean Squared (TRMS) Measurement Technology for Accuracy; NCVT; HVAC Applications Application Measures AC current and NCVT via clamp and AC/DC voltage, resistance, frequency, DC microamp, capacitance, duty cycle, diode test, and continuity via test-leads, and temperature with thermocouple Ohms (Resistance) 40MO Temperature Range -40° - 1832°F (-40° - 1000°C) Included Carrying Case, Instructions, Test Leads, Thermocouple, and Batteries Voltage 600V AC/DC DC Voltage 600V Auto-Power Off Yes Overall Width 3.5" (8.9 cm) Ingress Protection €” DC Polarity Indicator Yes Overall Length 8.45" (21.5 cm) Overall Height 1.5" (3.8 cm) Standard CATIII 600V, Class 2, Double Insulation Safety Rating, CE Certified Weight 11 oz (314 g)