{"product_id":"insulation-resistance-tester-irt803-600v-ac-dc-accurate-megohmmeter","title":"Insulation Resistance Tester IRT803 600V AC\/DC - Accurate Megohmmeter","description":"\u003cp\u003eOur review of the IRT803 finds it best suited to electricians and maintenance technicians who need a reliable insulation resistance tester with broad voltage and resistance ranges. The standout reason to buy is straightforward: it combines a wide test range up to 20G with clear, backlit readouts and a rugged design, making routine insulation checks and voltage verification quicker and less error prone. The IRT803's auto ranging, PI\/DAR calculations and safety ratings mean it performs like a professional tool rather than a hobby meter.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eWide testing range:\u003c\/strong\u003e Offers voltage testing at 50V, 100V, 250V, 500V and 1000V and resistance ranges that cover 0.01M up to multi-gigohm readings for broad job coverage.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh accuracy:\u003c\/strong\u003e Provides accurate insulation resistance readings with 1.5-3% + 5 digits in the 0.01M to 500M window so users can trust measured values on critical tests.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBuilt for safety:\u003c\/strong\u003e CATIV rating up to 600V and CATII to 1000V gives clear protection margins on live-site work and reduces risk during higher voltage checks.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePractical design:\u003c\/strong\u003e Easy-to-read backlit LCD plus a built-in work light and protective rubber boot help in dark, rough field conditions and keep leads stored neatly.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTime-saving functions:\u003c\/strong\u003e Automatic calculation of polarization index (PI) and dielectric absorption ratio (DAR) and features like Hold, Zero, Lock and Compare speed through test sequences.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eComplete kit:\u003c\/strong\u003e Ships with silicone test leads, probe with alligator clips, soft carrying case and batteries so the unit is ready for work out of the box.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWho It's For\u003c\/h2\u003e\n\u003cp\u003eThe IRT803 is ideal for industrial electricians, maintenance techs and contractors who routinely perform insulation resistance tests, earth-bond checks and voltage verification up to 1000V AC\/DC. The combination of auto ranging, PI\/DAR calculation and a protective boot makes it practical for field service and shop environments.\u003c\/p\u003e\n\u003cp\u003eLess suitable users include casual DIYers who rarely test insulation and would not use the 1000V capability, and anyone who needs a full-featured bench megohmmeter with laboratory-grade specifications beyond the meter's 1-year limited warranty.\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\u003eBroad voltage options and a large resistance range make it versatile for many insulation tests.\u003c\/li\u003e\n\u003cli\u003eAccurate readings in the common test window provide confidence for diagnostics and acceptance tests.\u003c\/li\u003e\n\u003cli\u003eRobust safety ratings and a rugged rubber boot suit it for jobsite use.\u003c\/li\u003e\n\u003cli\u003eIncludes leads, probe, case and batteries so it is ready to use immediately.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eThe unit carries a 1-year limited warranty, which is shorter than some industrial instruments; heavy users may prefer extended service support.\u003c\/li\u003e\n\u003cli\u003eAccuracy outside the 0.01M-500M band is not specified as tightly, so extreme low- or high-end precision requirements may need a different instrument.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eDevice type\u003c\/td\u003e\n\u003ctd\u003eInsulation resistance tester \/ megohmmeter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVoltage test selections\u003c\/td\u003e\n\u003ctd\u003e50V, 100V, 250V, 500V, 1000V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eResistance range\u003c\/td\u003e\n\u003ctd\u003e0.01M to 20G (auto ranging)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAccuracy\u003c\/td\u003e\n\u003ctd\u003e1.5-3% + 5 digits (0.01M-500M)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSafety rating\u003c\/td\u003e\n\u003ctd\u003eCATIV to 600V, CATII to 1000V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDisplay \u0026amp; features\u003c\/td\u003e\n\u003ctd\u003eBacklit LCD, work light, Hold\/Zero\/Lock\/Compare, PI and DAR\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIncluded accessories\u003c\/td\u003e\n\u003ctd\u003eSilicone test leads with alligator clips, insulation probe with clips, soft case, 4 AA batteries\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch2\u003eOur Verdict\u003c\/h2\u003e\n\u003cp\u003eThe IRT803 is a practical, value-oriented insulation resistance tester for professionals who need a rugged field tool with wide voltage and resistance coverage. Its accurate readings in the common test band, built-in PI\/DAR functions and protective design deliver dependable day-to-day performance, making it a sensible buy for electricians and maintenance teams who want a ready-to-use megohmmeter without unnecessary complexity.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eDoes the meter include leads and a case?\u003c\/strong\u003e\u003cbr\u003eThe kit ships with silicone test leads, an insulation probe with alligator clips, a soft carrying case and four AA batteries.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat safety category ratings does it have?\u003c\/strong\u003e\u003cbr\u003eThe unit is rated CATIV up to 600V and CATII up to 1000V for enhanced on-site protection.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan it calculate PI and DAR automatically?\u003c\/strong\u003e\u003cbr\u003eYes, the IRT803 performs automatic polarization index (PI) and dielectric absorption ratio (DAR) calculations to speed insulation assessments.\u003c\/p\u003e","brand":"UEi Test Instruments","offers":[{"title":"Default Title","offer_id":48260520673499,"sku":"B07TSSS7QD","price":127.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/71ulDEMPqML._SL1500.jpg?v=1776383345","url":"https:\/\/gearmusthave.com\/products\/insulation-resistance-tester-irt803-600v-ac-dc-accurate-megohmmeter","provider":"GearMustHave","version":"1.0","type":"link"}