{"product_id":"dt-2238-lutron-dual-mode-photo-contact-tachometer-with-lcd-memory-recall","title":"DT-2238 | Lutron Dual-Mode Photo \u0026 Contact Tachometer with LCD \u0026 Memory Recall","description":"\u003ch4\u003eDescription \u003c\/h4\u003e\n\u003cp\u003eThe Lutron DT-2238 is a dual-mode tachometer designed to measure motor and machinery speed using both photo and contact methods. It delivers high-precision rotational speed measurements with ±0.05% accuracy and is ideal for use in industrial, automotive, and maintenance applications. The DT-2238 features a backlit LCD, memory recall, and durable ABS housing for reliable long-term use.\u003c\/p\u003e\n\u003cp class=\"\" data-end=\"574\" data-start=\"284\"\u003e \u003c\/p\u003e\n\u003cp class=\"\" data-end=\"574\" data-start=\"284\"\u003e \u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCondition\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNew\/Never Used Surplus\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eLutron\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCategory\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eTest Equipment\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePart Number\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDT-2238\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSubcategory\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eTachometers\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMeasurement Modes\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePhoto Tachometer \/ Contact Tachometer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePhoto RPM Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e5 to 100,000 RPM\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eContact RPM Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0.5 to 19,999 RPM\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAccuracy\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e±(0.05% + 1 digit)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMeasurement Distance\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUp to 500 mm (photo mode)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDisplay\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eLarge LCD with backlight\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMeasurement Units\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eRPM, RPS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMemory Functions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eLast, Max, Min readings recall\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePower Supply\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e4 x AA batteries (included)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBattery Life\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eApprox. 30 hours continuous use\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAuto Power Off\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAfter 60 seconds of inactivity\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOperating Temperature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0°C to 50°C (32°F to 122°F)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eHousing Material\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eABS plastic\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDimensions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCompact ergonomic handheld size\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e190 grams (including batteries)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch4\u003eInformation About DT-2238\u003c\/h4\u003e\n\u003cp\u003eThe DT-2238 is a versatile tachometer in Lutron’s instrumentation lineup, combining photo and contact measurement in a compact handheld design. It can measure speeds from 5 to 100,000 RPM (photo) and 0.5 to 19,999 RPM (contact), offering flexibility for use with rotating equipment in hard-to-reach or hazardous environments. The device includes features like auto power-off, memory for min\/max\/last readings, and a visible laser light source for safer non-contact measurements. Ideal for field or workshop use, it supports multiple measurement units and ensures accuracy through a microprocessor-based circuit.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eKey Features:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e2-in-1 Tachometer: Combines photo and contact RPM measurement in one device.\u003c\/li\u003e\n\u003cli\u003eWide RPM Range: Measures from 5 to 100,000 RPM (photo) and 0.5 to 19,999 RPM (contact).\u003c\/li\u003e\n\u003cli\u003eHigh Accuracy: ±0.05% + 1 digit for reliable speed measurements.\u003c\/li\u003e\n\u003cli\u003eClear LCD Display: Large backlit screen ensures visibility in dim environments.\u003c\/li\u003e\n\u003cli\u003eMemory Recall: Stores last, max, and min readings automatically.\u003c\/li\u003e\n\u003cli\u003eLong Battery Life: Up to 30 hours of continuous use with 4 x AA batteries.\u003c\/li\u003e\n\u003cli\u003eAuto Power Off: Saves power by shutting down after 60 seconds of inactivity.\u003c\/li\u003e\n\u003cli\u003eDurable Design: Rugged ABS plastic body for long-term industrial use.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe DT-2238 delivers the reliability and precision required for professional rotational speed diagnostics across industrial and automotive settings.\u003c\/p\u003e","brand":"Lutron","offers":[{"title":"Default Title","offer_id":49105261953280,"sku":"DT-2238","price":998.13,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0388\/5331\/2557\/files\/51PggMGUgnL._SL500.jpg?v=1785543731","url":"https:\/\/alotechparts.com\/products\/dt-2238-lutron-dual-mode-photo-contact-tachometer-with-lcd-memory-recall","provider":"Alo Tech Solutions","version":"1.0","type":"link"}