{"product_id":"klein-tools-cl490-ac-dc-dual-display-clamp-meter-trms-accuracy","title":"Klein Tools CL490 AC\/DC Dual Display Clamp Meter - TRMS Accuracy","description":"\u003cp\u003eIn this review the Klein Tools CL490 Dual Display Clamp Meter is examined for electricians, HVAC technicians and serious DIYers who need accurate, portable measurements on the job. The single biggest reason to buy is its combination of \u003cstrong\u003eTrue RMS accuracy\u003c\/strong\u003e and a dual, high-visibility display that makes readings easier when working in tight or awkward spaces. The meter pairs clamp-based AC\/DC current sensing with full multimeter functions, and ships with test leads and a thermocouple for temperature checks right out of the case.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDual high-visibility screens:\u003c\/strong\u003e A main front display plus a secondary bottom display give alternative viewing angles so readings remain visible in cramped panels or when the meter is rotated.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTRMS and auto-ranging:\u003c\/strong\u003e True Root Mean Squared measurement and auto-ranging simplify accurate readings on non-sinusoidal signals and reduce the need for manual range selection.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClamp and test-lead versatility:\u003c\/strong\u003e The clamp measures AC\/DC current and NCVT while the test leads handle AC\/DC voltage, resistance, continuity, frequency and capacitance for complete troubleshooting.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBacklit reverse-contrast LCD:\u003c\/strong\u003e The backlit, reverse-contrast screen improves viewability in dim conditions and provides clear data during early morning or indoor work.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConvenient hands-free options:\u003c\/strong\u003e A rear test lead holder and optional magnetic hanger give practical ways to position the meter for hands-free operation on larger jobsites.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eComplete kit:\u003c\/strong\u003e Includes carrying case, test leads with safety caps, thermocouple and batteries so the meter is ready to use after purchase.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWho It's For\u003c\/h2\u003e\n\u003cp\u003eThe CL490 is aimed at professional tradespeople and advanced DIYers who need a dependable clamp meter with \u003cstrong\u003eTRMS accuracy\u003c\/strong\u003e for mixed AC and DC systems and motors. Electricians who work inside panels, on HVAC systems or in tight service spaces will appreciate the dual-display design and bright backlight.\u003c\/p\u003e\n\u003cp\u003eThose who only need occasional basic voltage checks or who require ultra-compact pocket meters for light home tasks might find the CL490 more feature-rich and slightly larger than necessary. If continuous logging or advanced data export is essential, a different meter with dedicated logging features would be a better fit.\u003c\/p\u003e\n\u003ch2\u003ePros \u0026amp; Cons\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003ePros\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eExcellent measurement versatility with clamp and test-lead functions covering current, voltage, resistance, capacitance and temperature.\u003c\/li\u003e\n\u003cli\u003eClear visibility in low light thanks to backlit reverse-contrast displays and a helpful secondary display for awkward angles.\u003c\/li\u003e\n\u003cli\u003eAccurate readings with auto-ranging and TRMS technology for real-world electrical signals.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eThe main display can be difficult to read in bright sunlight, a common limitation noted by users.\u003c\/li\u003e\n\u003cli\u003eAuto-power off is useful for battery life but can interrupt long troubleshooting sessions if not disabled.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003eCL490 Dual Display Clamp Meter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFunctions\u003c\/td\u003e\n\u003ctd\u003eAC\/DC current, AC\/DC voltage, resistance, continuity, frequency, capacitance, temperature, diode test, NCVT\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAccuracy tech\u003c\/td\u003e\n\u003ctd\u003eTrue RMS (TRMS), auto-ranging\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDisplay\u003c\/td\u003e\n\u003ctd\u003eBacklit reverse-contrast LCD with dual screens\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIncluded accessories\u003c\/td\u003e\n\u003ctd\u003eCarrying case, test leads with safety caps, thermocouple, 2 x AA batteries\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSafety \/ holders\u003c\/td\u003e\n\u003ctd\u003eTest lead holder on back; optional magnetic hanger available separately\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch2\u003eOur Verdict\u003c\/h2\u003e\n\u003cp\u003eThe CL490 is a practical, well-rounded clamp meter that delivers accurate TRMS readings and real-world convenience with its dual displays and full multimeter feature set. Professionals who need reliable accuracy, visibility in tight spaces and a ready-to-use kit will find strong value here, while casual users may not need the full feature list.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eDoes this clamp meter measure DC current?\u003c\/strong\u003e\u003cbr\u003eYes. The CL490 measures both AC and DC current with the clamp and offers NCVT detection for live AC sensing.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs temperature measurement included?\u003c\/strong\u003e\u003cbr\u003eYes. A thermocouple is included and the meter can display temperature readings via the thermocouple input.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan the meter hold readings for later viewing?\u003c\/strong\u003e\u003cbr\u003eYes. The CL490 includes Data Hold and Max\/Min functions to capture and review measurements, plus Rel\/Zero for differential checks.\u003c\/p\u003e","brand":"KLEIN TOOLS","offers":[{"title":"Default Title","offer_id":48629883011291,"sku":"B0F2GR1D9D","price":119.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/51pGLdpxW8L._SL1000.jpg?v=1778430583","url":"https:\/\/gearmusthave.com\/products\/klein-tools-cl490-ac-dc-dual-display-clamp-meter-trms-accuracy","provider":"GearMustHave","version":"1.0","type":"link"}