{"product_id":"lm393-light-operated-switch-diy-kit-photosensitive-electronic-module","title":"LM393 Light-Operated Switch DIY Kit – Photosensitive Module","description":"\n\u003ch2\u003eLM393 Light-Operated Switch DIY Kit – Photosensitive Electronic Module with Trigger Output\u003c\/h2\u003e\n\u003cp\u003eTake your electronics projects to the next level with the \u003cstrong\u003eLM393 Light-Operated Switch DIY Kit\u003c\/strong\u003e. This compact, fun-to-build photosensitive module uses the popular LM393 comparator IC to detect ambient light levels and trigger a digital output — perfect for hobbyists, students, and makers exploring sensor-based circuits.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLM393 Comparator IC\u003c\/strong\u003e — Reliable dual differential comparator for precise light-level detection\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePhotosensitive (Light-Dependent) Trigger\u003c\/strong\u003e — Automatically switches output based on detected light intensity\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAdjustable Sensitivity\u003c\/strong\u003e — On-board potentiometer lets you fine-tune the light threshold to suit your environment\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDigital Trigger Output Mode\u003c\/strong\u003e — Clean HIGH\/LOW signal output, easy to interface with microcontrollers (Arduino, Raspberry Pi, etc.)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWide Operating Temperature\u003c\/strong\u003e — Rated from -40°C to +85°C, suitable for a range of conditions\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLow Power Consumption\u003c\/strong\u003e — Operates at 5–6V supply voltage with up to 400mA dissipation\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDIY Kit Format\u003c\/strong\u003e — Great hands-on learning experience for soldering and circuit assembly\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompact \u0026amp; Versatile\u003c\/strong\u003e — Small footprint makes it easy to integrate into larger projects\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eIC\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eLM393 Dual Comparator\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSupply Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e5–6V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDissipation Power\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e400mA\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOutput Mode\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDigital Trigger (HIGH\/LOW)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOperating Temperature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e-40°C to +85°C\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePackage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDIY Kit (Quantity: 1)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCountry of Origin\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMade in Mainland China\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eWhat Can You Build?\u003c\/h3\u003e\n\u003cp\u003eThis module is ideal for a wide range of DIY and educational projects, including:\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eAutomatic light-switching circuits\u003c\/li\u003e\n  \u003cli\u003eDay\/night detection systems\u003c\/li\u003e\n  \u003cli\u003eLight-triggered alarm or notification systems\u003c\/li\u003e\n  \u003cli\u003eArduino and microcontroller sensor experiments\u003c\/li\u003e\n  \u003cli\u003eSmart home automation prototypes\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eRelated Products You May Like\u003c\/h3\u003e\n\u003cp\u003eExplore more tools and DIY kits in our store:\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/electromagnetic-induction-tester-coil-motherboard-fault-detector\"\u003eElectromagnetic Induction Tester – Coil \u0026amp; Circuit Fault Detector\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/air-compressor-pressure-gauge-0-10-0-12-0-25-bar-hydraulic-diy\"\u003eAir Compressor Pressure Gauge 0-10\/0-12\/0-25 Bar | DIY Tool\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/360-bicycle-chain-cleaner-tool-gear-cleaning-kit\"\u003e360° Bicycle Chain Cleaner Tool | Bike Gear Cleaning Kit\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eLearn more: \u003ca href=\"https:\/\/www.osha.gov\/hand-power-tools\" target=\"_blank\" rel=\"noopener\"\u003eOSHA guidance on hand and power tools\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: What microcontrollers is the LM393 light-operated switch kit compatible with?\u003c\/h4\u003e\n\u003cp\u003eA: The LM393 photosensitive module outputs a standard digital HIGH\/LOW signal, making it compatible with most popular microcontrollers including Arduino, Raspberry Pi, ESP8266, ESP32, and similar platforms. Simply connect the output pin to a digital input on your board.\u003c\/p\u003e\n\u003ch4\u003eQ: Do I need soldering skills to assemble this DIY kit?\u003c\/h4\u003e\n\u003cp\u003eA: Yes, this is a DIY kit that requires basic soldering to assemble the components onto the PCB. It is a great beginner-to-intermediate project for anyone learning electronics, soldering, and circuit building. A soldering iron, solder wire, and basic tools are recommended.\u003c\/p\u003e\n\u003ch4\u003eQ: Can I adjust the sensitivity of the light detection?\u003c\/h4\u003e\n\u003cp\u003eA: Absolutely! The module includes an on-board potentiometer (trimmer resistor) that allows you to easily adjust the light sensitivity threshold. Simply turn the potentiometer to set the exact light level at which the output triggers — no additional components needed.\u003c\/p\u003e\n\u003ch4\u003eQ: What is the operating voltage for this LM393 photosensitive module?\u003c\/h4\u003e\n\u003cp\u003eA: The module operates on a supply voltage of 5–6V DC, making it compatible with standard 5V power supplies, USB power banks, and most microcontroller output rails. Ensure your power source is within this range for reliable operation.\u003c\/p\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What microcontrollers is the LM393 light-operated switch kit compatible with?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The LM393 photosensitive module outputs a standard digital HIGH\/LOW signal, making it compatible with most popular microcontrollers including Arduino, Raspberry Pi, ESP8266, ESP32, and similar platforms. Simply connect the output pin to a digital input on your board.\"}}, {\"@type\": \"Question\", \"name\": \"Do I need soldering skills to assemble this DIY kit?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes, this is a DIY kit that requires basic soldering to assemble the components onto the PCB. 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