{"product_id":"gt-dm303-autool-professional-automotive-diagnostic-multimeter-with-oscilloscope-12-test-functions","title":"GT-DM303 - AUTOOL Professional Automotive Diagnostic Multimeter with Oscilloscope \u0026 12 Test Functions","description":"\u003cp data-pm-slice=\"1 1 []\"\u003e\u003cspan\u003e\u003ciframe width=\"1337\" height=\"752\" src=\"https:\/\/www.youtube.com\/embed\/A1XY8TcsASI\" title=\"AUTOOL DM303 Automotive Diagnostic Multimeter - A Powerful Tool for Car Maintenance\"\u003e\u003c\/iframe\u003e\u003cbr\u003eThe \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eGT-DM303 AUTOOL Professional Automotive Diagnostic Multimeter\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e is a versatile automotive diagnostic tool that combines 12 test functions in one compact handheld device. Featuring a 2.8-inch colour LCD display and a built-in oscilloscope with waveform display, it supports a wide range of electrical measurements and vehicle diagnostic tests.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eDesigned for automotive workshops, auto electricians and advanced DIY users, the GT-DM303 supports DC and AC voltage measurement, current measurement, resistance testing, frequency measurement, automotive circuit testing, injector testing, relay testing, cranking tests, ignition signal pulse testing and K\/CAN line data detection. It also supports analog signal and waveform testing, making it suitable for various automotive electrical diagnostic applications.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eWith a frequency measurement range of 1Hz to 1MHz, injector drive signal output of 500–6000 rpm and automotive circuit drive current of 0–5A, this diagnostic multimeter provides multiple testing capabilities in one tool. Its compact design includes a built-in stand, while the included protective carry case, detection leads, probe and jumper cables provide a range of accessories for automotive testing.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cspan\u003eKey Features \u0026amp; Benefits\u003c\/span\u003e\u003c\/h2\u003e\n\u003cul data-spread=\"false\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003e12 Diagnostic Functions:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Combines multiple electrical measurement and automotive diagnostic functions in one device.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003e2.8-Inch Colour LCD Display:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Displays measurement readings and oscilloscope waveforms.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eBuilt-In Oscilloscope:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Supports waveform display for signal testing.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eVoltage Measurement:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Measures DC voltage from 0–1000V and AC voltage from 0–700V.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eCurrent Measurement:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Supports current measurement ranges of 0–20A and 0–200mA.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eResistance Testing:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Measures resistance from 0–1MΩ.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eFrequency Measurement:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Supports frequency testing from 1Hz to 1MHz.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eK\/CAN Line Data Detection:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Supports automotive K\/CAN line testing.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eCranking Test:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Supports testing of the vehicle starting system.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eInjector Testing:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Provides injector drive signal output from 500–6000 rpm.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eRelay Testing:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Supports relay testing with contact resistance.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eAutomotive Circuit Testing:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Supports automotive circuit drive current from 0–5A.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eIgnition Signal Testing:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Supports ignition signal pulse testing.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eAnalog Signal Testing:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Supports analog signal and waveform testing.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eCompact Handheld Design:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Includes a built-in stand for convenient positioning.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eProtective Carry Case:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Supplied with multiple detection leads, adapters, a probe and jumper cables.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cspan\u003eTechnical Specifications\u003c\/span\u003e\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cspan\u003eSpecification\u003c\/span\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cspan\u003eDetails\u003c\/span\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eModel\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eAUTOOL DM303\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eDisplay\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e2.8-inch colour LCD\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eVoltage Measurement Range\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eDC 0–1000V, AC 0–700V\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eCurrent Measurement Range\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e0–20A, 0–200mA\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eResistance Range\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e0–1MΩ\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eFrequency Range\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e1Hz–1MHz\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eAutomotive Circuit Drive Current\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e0–5A\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eInjector Drive Signal Output\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e500–6000 rpm\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eWorking Temperature\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e0°C to 40°C\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eProduct Dimensions\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e190 × 85 × 33 mm\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eProduct Weight\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e1.4 kg\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003ePackage Dimensions\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e21.5 × 26.3 × 10 cm\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003e\u003cspan\u003eFunctions\u003c\/span\u003e\u003c\/h2\u003e\n\u003col data-spread=\"false\" start=\"1\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eVoltage measurement\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eCurrent measurement\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eResistance measurement\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eFrequency measurement\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eOscilloscope waveform display\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eAutomotive circuit testing\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eCranking test for the starting system\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eInjector testing\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eRelay testing with contact resistance\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eAnalog signal and waveform testing\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eIgnition signal pulse testing\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eK\/CAN line data detection\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch2\u003e\u003cspan\u003eWhat's in the Box\u003c\/span\u003e\u003c\/h2\u003e\n\u003cul data-spread=\"false\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003e1 × AUTOOL DM303 Diagnostic Multimeter\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003e1 × Multi-functional detection line with CAN\/K line, sine, square and 5V signal leads\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003e1 × Automotive circuit detection line\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003e1 × Ignition signal detection line\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003e1 × Battery clip line\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003e3 × Jumper cables (Yellow, Green and Black)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003e1 × Probe\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003e1 × User manual\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003e1 × Protective carry case\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cspan\u003eApplications\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cspan\u003eThe GT-DM303 AUTOOL Automotive Diagnostic Multimeter is designed for automotive electrical testing and vehicle diagnostics. Its combined measurement, oscilloscope, injector, relay, cranking, ignition signal and K\/CAN line testing functions make it a practical tool for automotive workshops, auto electricians and advanced DIY users.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eThe GT-DM303\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e combines essential automotive electrical measurement and diagnostic functions in one compact device, supplied with a selection of testing accessories and a protective carry case.\u003c\/span\u003e\u003c\/p\u003e","brand":"AUTOOL","offers":[{"title":"Default Title","offer_id":49804676890862,"sku":"GT-DM303","price":2749.0,"currency_code":"ZAR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1766\/0013\/files\/WhatsAppImage2026-10-19at13.39.02.jpg?v=1792410158","url":"https:\/\/gtsupplies.co.za\/products\/gt-dm303-autool-professional-automotive-diagnostic-multimeter-with-oscilloscope-12-test-functions","provider":"Garage \u0026 Tool Supplies","version":"1.0","type":"link"}