Klein Tools CL390 is an automatically ranging true root mean squared (TRMS) digital clamp meter. It measures AC/DC current and NCVT via the clamp, AC/DC voltage, DC microamps, resistance, continuity, frequency, capacitance, and diodes via test leads, and temperature via a thermocouple probe. It features a high visibility, reverse contrast LCD display that optimizes view ability both in dark or bright ambient lighting.

• Features
• Test lead holder on side of clamp and optional magnetic hanger for meter (Cat. Nos. 69445 or 69417) for hands free operation
• Non-contact voltage tester integrated into the clamp jaw
• High-visibility reverse contrast LCD display for improved view ability in all ambient lighting conditions
• Automatically ranging True Root Mean Squared (TRMS) measurement technology for accuracy
• Measures AC/DC 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
• Measures temperature with a K-Type thermocouple probe
• Max/Min, Rel/Zero and Data Hold capability
• 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
• Built to withstand a 6.6-Foot (2 m) drop
• CAT III 600V, Class 2, Double insulation safety rating
• Meets requirements for use in basic and controlled electromagnetic environments like residential, office and light-industrial locations
• Automatically Ranging True Root Mean Squared (TRMS) Measurement Technology for Accuracy; AC/DC Current Measurement; High Visibility Reverse Contrast LCD; NCVT
• Warnings
• Read, understand and follow all instructions, cautions and warnings attached to and /or packed with all test and measurement devices before each use.
• Do not attempt to measure resistance or continuity on live circuits.
• Before each use verify meter operation by measuring a known voltage or current.
• 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.
• Usage of this meter in any way other than that specified by the manufacturer can impair safe operation, resulting in severe injury or death.

• Specifications
• Jaw Size : 1.6" (4.1 cm)
• DC Polarity Indicator : Yes
• Display : 4000 Count Reverse Contrast LCD
• Voltage : 600 V AC/DC
• Overall Length : 8.45" (21.5 cm)
• DC Micro-Amp : 200 µA
• DC Voltage : 600 V
• Current : 400 A AC/DC
• Drop Protection : 6.6' (2 m)
• Capacitance : 4000 µF
• Batteries : 3 x AAA
• Application : Measures both AC/DC current and NCVT via the clamp and AC/DC voltage, DC microamp current, resistance, continuity, frequency, duty-cycle, capacitance and tests diodes via the test leads, and temperature with thermocouple
• Overall Width : 3.5" (8.9 cm)
• Standard : CATIII 600V, Class 2, Double Insulation Safety Rating, CE Certified
• Functions : TRMS, AC/DC Current, NCVT, AC/DC Voltage, Resistance, DC microamp, Frequency, Capacitance, Continuity, Duty Cycle, Diode Test, and Temperature
• Material : ABS/Electronics
• Frequency : 10 Hz to 60 kHz for 8 V to 220 V AC RMS
• AC Voltage : 600 V
• Temperature Range : -40° - 1832°F (-40° - 1000°C)
• Included : Clamp Meter; Carrying Case; Instructions; Test Leads; Thermocouple; Batteries
• Overall Height : 1.5" (3.8 cm)
• Type : AC/DC Current TRMS Clamp
• Ohms (Resistance) : 40 MΩ
• Auto-Power Off : Yes
• Height : 1.5060 in
• Width : 3.5120 in
• Depth : 8.4500 in
• Weight : 0.5160 lbs