{"product_id":"650nm-5mw-red-point-laser-diode-module-5v-chrome-brass-housing","title":"650nm 5mW Red Dot Laser Diode Module — Adjustable Focus, APC Driver, 3-6VDC, 12mm Brass Housing","description":"\u003c!-- LASER SAFETY WARNING — TOP OF LISTING --\u003e\n\u003cdiv style=\"background: #fce4e4; border: 2px solid #d63600; border-radius: 6px; padding: 15px; margin-bottom: 20px; text-align: center;\"\u003e\n\u003cp style=\"font-size: 16px; font-weight: bold; color: #d63600; margin: 0 0 8px 0;\"\u003e⚠️ LASER SAFETY — READ BEFORE USE\u003c\/p\u003e\n\u003cp style=\"font-size: 14px; margin: 0;\"\u003eThis module emits a visible laser beam (~5mW, Class IIIa\/3R). \u003cstrong\u003eNever point at eyes, faces, animals, aircraft, or vehicles.\u003c\/strong\u003e Direct or reflected laser light can cause eye injury. Always follow proper laser safety precautions.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cp\u003eNeed a precise point of reference instead of a line? The 650nm 5mW Red Dot Laser Module projects a sharp, focused red laser dot — perfect for pointing, targeting, and precision alignment where a single reference point is all you need. The adjustable focus ring lets you fine-tune the dot from a tight pinpoint to a slightly larger spot depending on your working distance.\u003c\/p\u003e\n\u003cp\u003eThis module uses an APC (Automatic Power Control) drive circuit, which actively monitors and regulates the laser diode's output to keep brightness consistent even as temperature and voltage fluctuate — giving you a more stable, reliable dot than a simple resistor-limited driver. Housed in a durable 12mm diameter × 35mm brass housing, it's built to the same rugged form factor as our line laser module, just with a dot-producing lens.\u003c\/p\u003e\n\u003c!-- ELECTRICAL WARNING --\u003e\n\u003cdiv style=\"background: #fff3cd; border: 2px solid #ffc107; border-radius: 6px; padding: 12px; margin-top: 15px;\"\u003e\n\u003cp style=\"font-size: 14px; margin: 0;\"\u003e\u003cstrong\u003e⚠️ Important:\u003c\/strong\u003e The metal case is \u003cstrong\u003enot electrically isolated\u003c\/strong\u003e — it is tied to the laser diode's anode and will be at the same voltage as your power supply. \u003cstrong\u003eDo not ground the case\u003c\/strong\u003e or allow it to contact grounded metal surfaces, as this will short-circuit and damage the module.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003chr\u003e\n\u003ch2\u003e⚡ Key Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrecision dot beam:\u003c\/strong\u003e Projects a sharp, focused red dot — ideal for pointing, targeting, and single-point alignment.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAPC drive circuit:\u003c\/strong\u003e Automatic Power Control keeps output stable and consistent, compensating for temperature and voltage changes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdjustable focus:\u003c\/strong\u003e Rotate the threaded lens to fine-tune dot size and sharpness for different distances.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWide operating range:\u003c\/strong\u003e Runs on DC3V–6V, giving flexibility across battery packs, regulated supplies, and microcontroller-friendly voltages.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompact brass housing:\u003c\/strong\u003e 12mm diameter × 35mm length — durable, corrosion-resistant, and good heat dissipation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLow, predictable current draw:\u003c\/strong\u003e Maximum ~40mA, suitable for driving from a transistor-switched digital output.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch2\u003e🔧 How to Use\u003c\/h2\u003e\n\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003eConnect power:\u003c\/strong\u003e Apply DC3V–6V across the module's leads, observing correct polarity. The dot activates immediately.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFocus the dot:\u003c\/strong\u003e Aim at a surface and gently rotate the focus ring until the dot is as sharp and small as needed for your application.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMount and aim:\u003c\/strong\u003e Secure the housing in a bracket or fixture and aim at your target reference point.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMicrocontroller control (optional):\u003c\/strong\u003e For digital on\/off switching from an Arduino or similar board, drive the module through a transistor or MOSFET rather than directly from a GPIO pin, since the module's current draw can exceed safe GPIO limits on some boards.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003chr\u003e\n\u003ch2\u003e🎯 Perfect For\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePointing \u0026amp; targeting\u003c\/strong\u003e — presentations, demonstrations, and precision aiming tasks\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLaser tripwire \/ security\u003c\/strong\u003e — pair with a photoresistor to detect when the beam is broken across a doorway or corridor\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAlignment reference points\u003c\/strong\u003e — mark a single fixed point for assembly, drilling, or positioning tasks\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRobotics\u003c\/strong\u003e — obstacle detection, boundary marking, or targeting feedback\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOptics experiments\u003c\/strong\u003e — demonstrate beam collimation, reflection, and focusing principles\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eArduino \u0026amp; STEM projects\u003c\/strong\u003e — teach digital\/analog output control and optical sensing\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch2\u003e📊 Specifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLaser wavelength\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e650nm (red)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOptical power\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMax 5mW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLaser class\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eClass IIIa \/ 3R\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBeam pattern\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDot (point)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOperating voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDC3V–6V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMax operating current\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e40mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDrive circuit\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAPC (Automatic Power Control)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFocus\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eManually adjustable (threaded lens ring)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eHousing material\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eBrass\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eHousing dimensions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eApprox. 12 × 35 mm (0.47 x 1.38 inches) Diameter × Length\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e13.5g (0.48 oz)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCase isolation\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNOT isolated — case is tied to anode. Do not ground the case.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003chr\u003e\n\u003ch2\u003e🔌 Compatible With\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eArduino Uno, Mega, Nano, Leonardo — drive through a transistor\/MOSFET for safe switching\u003c\/li\u003e\n\u003cli\u003eESP32 \/ ESP8266 — use a transistor to switch power from a 3.3V–6V source\u003c\/li\u003e\n\u003cli\u003eRaspberry Pi — use a transistor\/MOSFET; do not connect directly to GPIO\u003c\/li\u003e\n\u003cli\u003eAny DC3V–6V source — USB power banks, battery packs, regulated supplies\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch2\u003e📦 What's in the Box\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e1 × 650nm 5mW Red Dot Laser Diode Module with pre-wired leads\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cblockquote\u003e\n\u003cp\u003e\u003cstrong\u003e📝 Note:\u003c\/strong\u003e Power supply, Arduino, breadboard, and additional wiring are not included and must be purchased separately.\u003c\/p\u003e\n\u003c\/blockquote\u003e\n\u003chr\u003e\n\u003ch2\u003e📊 Dot Laser vs. Line Laser — Which Do You Need?\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFeature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eThis Dot Laser\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eLine Laser\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBeam pattern\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSingle dot\u003c\/td\u003e\n\u003ctd\u003e120° line\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBest for\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePointing, targeting, tripwires\u003c\/td\u003e\n\u003ctd\u003eAlignment, leveling, cutting guides\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eHousing\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e12mm × 35mm brass\u003c\/td\u003e\n\u003ctd\u003e12mm × 35mm chrome brass\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOperating voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDC3V–6V\u003c\/td\u003e\n\u003ctd\u003e3.0V–5.0V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMax current draw\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e40mA\u003c\/td\u003e\n\u003ctd\u003e~30mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDrive circuit\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAPC (Automatic Power Control)\u003c\/td\u003e\n\u003ctd\u003eBuilt-in (fixed)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFocus\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAdjustable dot size\u003c\/td\u003e\n\u003ctd\u003eAdjustable line sharpness + orientation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCase isolated?\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNo — case tied to anode\u003c\/td\u003e\n\u003ctd\u003eNo — case tied to anode\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003ca rel=\"noopener\" title=\"650nm 5mW Red Line Laser Diode Module\" href=\"\/products\/650nm-5mw-red-laser-line-module-adjustable-focus-5v\" target=\"_blank\"\u003eNeed a line instead? View our 650nm 5mW Red Line Laser Module →\u003c\/a\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003e📄 Documentation \u0026amp; Resources\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/blogs\/learn\/650nm-5mw-red-dot-point-laser-diode-module-12mm-case-user-guide\" target=\"_blank\" title=\"650nm Red Laser Diode Module User Guide\" rel=\"noopener\"\u003eLaser Module User Guide — Wiring, Arduino Code, Focusing, Safety \u0026amp; Troubleshooting\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca rel=\"noopener\" title=\"All LED and Laser Module Guides\" href=\"\/blogs\/learn\/tagged\/lasers-leds\" target=\"_blank\"\u003eAll LED \u0026amp; Laser Module Guides\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003cp\u003e\u003cem\u003eSold and supported by \u003ca rel=\"noopener noreferrer\" href=\"https:\/\/envistiamall.com\" target=\"_blank\"\u003eEnvistia Mall\u003c\/a\u003e. Ships from the USA. For wiring diagrams, sample code, and troubleshooting, see the User Guide tab on this product page. The manufacturer and Envistia LLC (dba Envistia Mall) are not responsible for any damages or losses resulting from the use of this product. Always follow proper electrical safety practices when working with electronic components. Specifications are based on manufacturer data and are subject to change without notice.\u003c\/em\u003e\u003c\/p\u003e","brand":"ENVISTIA","offers":[{"title":"Default Title","offer_id":48631935041785,"sku":"EM-LEDLI-0025","price":4.29,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1641\/0911\/files\/Dot-Laser-red-5V-12MM-1.jpg?v=1783125967","url":"https:\/\/envistiamall.com\/products\/650nm-5mw-red-point-laser-diode-module-5v-chrome-brass-housing","provider":"Envistia Mall","version":"1.0","type":"link"}