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.Features Automatically Ranging True Root Mean Squared (TRMS) Measurement Technology for Accuracy; NCVT; HVAC Applications Auto-power off after 10 minutes to conserve battery life Includes a carrying case, test leads with CAT III/CAT IV safety caps, thermocouple, instructions, and 3 x AAA batteries Low battery indicator and easily accessible battery compartment CAT III 600V, Class 2, Double insulation safety rating Backlit LCD for ease of viewing in low light Auto-Range, Data Hold, and Max/Min value Automatically ranging True Root Mean Squared (TRMS) measurement technology for accuracy Built to withstand a 6.6-Foot (2 m) drop Measures temperature with a K-Type thermocouple probe Test lead holder on side of clamp and optional magnetic hanger for meter (Cat. Nos. 69445 or 69417) for hands free operation Clamp Meter measures AC current and NCVT via clamp and AC/DC voltage, resistance, frequency, DC microamps, capacitance, duty cycle, diode test, and continuity via test-leads, and temperature with thermocouple Non-contact voltage tester integrated into the clamp jaw Meets requirements for use in basic and controlled electromagnetic environments like residential, office and light-industrial locations Warnings Do not use the meter during electrical storms or in wet weather, and do not use the meter or test leads if they appear to be damaged. Before each use verify meter operation by measuring a known voltage or current. Do not attempt to measure resistance or continuity on live circuits. Usage of this meter in any way other than that specified by the manufacturer can impair safe operation, resulting in severe injury or death. Read, understand and follow all instructions, cautions and warnings attached to and /or packed with all test and measurement devices before each use. Current: 400 A AC Voltage: 600V AC/DC, CAT III Frequency: 10 Hz - 60 kHz DC Voltage: 600V DC Micro-Amp: 200 A Capacitance: 4000 F Temperature Range: -40 to 1832 F (-40 to 1000 C) Functions: TRMS, AC Current, NCVT, AC/DC Voltage, Resistance, DC Micro-Amp, Frequency, Capacitance, Duty Cycle, Diode Test, Continuity, Temperature Auto Ranging: Yes Auto-Power Off: Yes Drop Protection: 6.6 ft (2 m) Overall Length: 8.45 in (21.5 cm) Depth: 8.45 in Jaw Size: 1.6 in (4.1 cm) Overall Width: 3.5 in (8.9 cm) Width: 3.51 in Overall Height: 1.5 in (3.8 cm) Height: 1.51 in Weight: 0.615 lbs Display Size: 1.57 x 0.87 in (4 x 2.2 cm) Display: 4000 Count Backlit LCD Material: ABS, Electronics Safety Rating: Class 2, Double Insulation Standard: CE Certified Measurement Technology: True RMS DC Polarity Indicator: Yes Battery Type: 3 x AAA Ingress Protection: IP40 DownloadsSafety Data SheetVideo DownloadBrochure 1Spec SheetInstructionsCL320-1390365ART - WEB.pdf