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        Learn more by watching our Klein Tools CL390 | AC/DC Digital Clamp Meter 400A Auto-Range video.

        Klein Tools CL390 | AC/DC Digital Clamp Meter 400A Auto-Range

        The Klein Tools CL390 is a versatile AC/DC digital clamp meter designed for electricians, offering precise and reliable measurements. Featuring automatically ranging true root mean squared (TRMS) technology, this meter measures AC/DC current and NCVT via the clamp, as well as AC/DC voltage, DC microamps, resistance, continuity, frequency, capacitance, and diodes via test leads.

        It also measures temperature using a K-type thermocouple probe. The high-visibility reverse contrast LCD display ensures clear readings in all lighting conditions. Built to withstand a 6.6' drop, it includes a carrying case, test leads with safety caps, a thermocouple, instructions, and 3 x AAA batteries.

        AC/DC Digital Clamp Meter Features:

        • TRMS Technology: Automatically ranging true root mean squared measurements for accuracy.
        • Comprehensive Measurements: AC/DC current, NCVT, AC/DC voltage, DC microamps, resistance, continuity, frequency, capacitance, diodes, and temperature.
        • High Visibility: Reverse contrast LCD display for clear readings in any lighting.
        • Durable Design: Built to withstand drops up to 6.6 feet (2 meters).
        • Integrated NCVT: Non-contact voltage tester in the clamp jaw for added convenience.
        • User-Friendly: Auto power-off feature to conserve battery life and a low-battery indicator.
        • Safety Rated: CAT III 600 V, Class 2, double insulation, CE certified.

        CL390 FAQ:

        Q: What types of measurements can the Klein Tools CL390 perform?
        A: It measures AC/DC current, NCVT, AC/DC voltage, DC microamps, resistance, continuity, frequency, capacitance, diodes, and temperature.

        Q: Does the clamp meter include a non-contact voltage tester?
        A: It features an integrated non-contact voltage tester in the clamp jaw.

        Q: Is the display easy to read in different lighting conditions?
        A: Yes, it has a high-visibility reverse-contrast LCD display that improves readability in both dark and bright environments.

        (CL390)

        100-Day Fuss-Free Returns
        We want you to love what you buy—but if you change your mind, that’s okay too. That’s why Sparky Direct offers a 100-day money-back guarantee.

        • Items must be unused, with all parts, accessories, and original packaging.
        • We can’t accept returns if the product is damaged, incomplete, or not in resalable condition.
        • Proof of purchase is required.
        • Return shipping is the responsibility of the customer. 

        If your item isn’t in its original condition, please contact us before returning it—we might save you time and money.


        All products come with a manufacturer’s or supplier’s warranty

        • Warranty starts from the Invoice Date
        • Some suppliers offer in-home warranties and handle claims directly, so you won’t need to uninstall or return the product. Chat with us to check if your product qualifies.
        • Sparky Direct isn’t responsible for losses caused by product failure.
        • Warranties are void if products aren’t installed by a licensed electrician.

        Damaged or Faulty Goods
        If your order arrives damaged or is faulty, let us know within 24 hours.

        • Sparky Direct will pay for return shipping via an emailed return label.
        • If the fault is confirmed, we will send you a replacement item or provide a refund.

        Contact us via our chat to arrange the return.


        Exclusions
        We can’t accept returns for:

        • Items that have been installed, modified, or used
        • Clearance, End of life, Discontinued, or special order items (unless faulty)
        • All PPE Items
        • Goods returned without original packaging or proof of purchase

        How to Request a Return

        1. Contact our customer service team with your order number.
        2. Confirm it’s eligible under our return or warranty policy.
        3. Pack the item securely and return it using a trackable service.
        4. Once we receive and inspect it, we’ll process your refund or replacement.

        Warranty starts from Invoice Date

        Domestic Use: 1 Year
        Commercial Use: 1 Year
        Warranty Method: Return to Sparky Direct

        Specification Details
        Type AC/DC Current TRMS Clamp
        Material ABS/Electronics
        Batteries 3 x AAA
        Auto Shut Off Yes
        Jaw Size 4.1 cm
        Drop Protection 2 m
        Display 4000 Count Reverse Contrast LCD
        Functions TRMS, AC/DC Current, NCVT, AC/DC Voltage, Resistance, DC Microamps, Frequency, Capacitance, Continuity, Duty Cycle, Diode Test and Temperature
        Voltage 600 V AC/DC
        Frequency 10 Hz to 60 kHz for 8 V to 220 V AC RMS
        Current 400 A AC/DC
        Capacitance 4000 µF
        Ohms (Resistance) 40 MΩ
        AC Voltage 600 V
        DC Voltage 600 V
        DC Polarity Indicator Yes
        DC Microamp 200 µA
        Temperature Range -40 °C - 1,000 °C
        Standard CATIII 600V, Class 2, Double Insulation Safety Rating, CE Certified
        Included Clamp Meter; Carrying Case; Instructions; Test Leads; Thermocouple; Batteries
        Overall Length 21.5 cm
        Overall Height 3.8 cm
        Overall Width 8.9 cm
        Weight 314 g

        These specifications and characteristics outline physical, mechanical, electrical details.

        Brand Klein Tools
        SKU CL390
        Barcode # 092644692871
        Package Weight 0.570kg
        Package Width 0.140m
        Package Height 0.070m
        Package Length 0.290m
        TYPE VALUE
        Brand Klein Tools
        Colour Orange/Black
        Voltage (V) 600V AC/DC
        Operating Temperature 0°C - 40°C
        Tool Type AC/DC Clamp Meter
        Batteries 3 x AAA
        Current 400A AC/DC
        Included Clamp Meter; Carrying Case; Instructions; Test Leads; Thermocouple; Batteries
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