{"product_id":"klein-tools-et40-ac-dc-voltage-tester-cat-iii-250v","title":"Klein Tools ET40 Ac Dc Voltage Tester Cat Iii 250V","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe KLEIN TOOLS ET40 is an electronic AC\/DC voltage tester designed for fast, non-meter voltage detection in residential and light commercial electrical work. It tests AC voltages from 12 volts to 240 volts across four levels aligned with common residential voltages, and DC voltages from 1.5 volts to greater than 17 to 24 volts across four DC-aligned levels. Bright LEDs indicate both the type and level of voltage detected. The ET40 also identifies positive and negative DC polarity, making it useful for low-voltage DC diagnostics as well as standard line-voltage AC checks. Licensed electricians and HVAC technicians are the primary users.\u003c\/p\u003e\u003cp\u003eThe ET40 is suited for residential service work, panel troubleshooting, fixture and outlet verification, and low-voltage DC circuit checks. The four AC levels align with commonly encountered residential voltages including 12, 24, 120, and 240-volt ranges, while the DC levels cover battery and control-circuit voltages. Its compact form and built-in lead holders on the sides of the tester make it practical for tool belt carry and single-hand operation on the job.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eTests AC voltages from 12 volts to 240 volts at four levels aligned with common residential voltages\u003c\/li\u003e\n\u003cli\u003eTests DC voltages from 1.5 volts to greater than 17 to 24 volts at four DC-aligned levels\u003c\/li\u003e\n\u003cli\u003eIndicates positive and negative DC polarity\u003c\/li\u003e\n\u003cli\u003eBright LEDs display voltage type and level at a glance\u003c\/li\u003e\n\u003cli\u003eCAT III 250V rated with Class 2 double insulation for safe use in residential and light commercial environments\u003c\/li\u003e\n\u003cli\u003eIP41 rated for dust and water resistance\u003c\/li\u003e\n\u003cli\u003eBuilt to withstand a 9.9-foot drop; auto powers off after approximately 2 minutes of non-use to preserve battery life\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as a general-purpose AC\/DC voltage tester for use in residential electrical systems, low-voltage control circuits, and standard commercial wiring up to CAT III 250V applications.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation and use of this tester should be performed by a licensed electrician or qualified technician following applicable NEC guidelines. Always verify the tester itself is functioning before and after each use by testing on a known live source. Insert the test leads into the built-in side holders when not in use to protect the probes. The ET40 requires two AAA batteries, which are not included; replace batteries promptly when the low-battery indicator activates to ensure accurate readings.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAC Voltage Range\u003c\/strong\u003e: 12 volts to 240 volts (4 levels)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDC Voltage Range\u003c\/strong\u003e: 1.5 volts to greater than 17 to 24 volts (4 levels)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSafety Rating\u003c\/strong\u003e: CAT III 250V\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsulation Class\u003c\/strong\u003e: Class 2 Double Insulation\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIngress Protection\u003c\/strong\u003e: IP41 Dust and Water Resistant\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrop Rating\u003c\/strong\u003e: 9.9 feet\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAuto Power-Off\u003c\/strong\u003e: Approximately 2 minutes of non-use\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBattery\u003c\/strong\u003e: 2 x AAA (not included)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 3.6 pounds\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: KLEIN TOOLS\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: ET40\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"KLEIN TOOLS","offers":[{"title":"Default Title","offer_id":51525265654066,"sku":"ET40","price":252.95,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/f462a3b7c3a96ecbe302901d96f7e559.jpg?v=1785468905","url":"https:\/\/voomisupply.com\/products\/klein-tools-et40-ac-dc-voltage-tester-cat-iii-250v","provider":"Voomi Supply","version":"1.0","type":"link"}