{"product_id":"lm393-photosensitive-sensor-module-diy-light-controlled-switch-kit","title":"LM393 Photosensitive Sensor Module – DIY Light Switch Kit","description":"\n\u003ch2\u003eLM393 Photosensitive Sensor Module – DIY Light-Controlled Switch Kit\u003c\/h2\u003e\n\u003cp\u003eBuild your own automatic light-sensing circuit with the \u003cstrong\u003eLM393 Photosensitive Sensor Module\u003c\/strong\u003e. This compact DIY kit uses the widely popular LM393 comparator chip to detect ambient light levels and trigger an output switch automatically — perfect for electronics hobbyists, students, makers, and anyone exploring DIY automation projects.\u003c\/p\u003e\n\n\u003ch3\u003eKey Specifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eChip:\u003c\/strong\u003e LM393 dual differential comparator\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaximum active load current:\u003c\/strong\u003e 400 mA\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaximum passive load power:\u003c\/strong\u003e 300 W\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBoard dimensions:\u003c\/strong\u003e 45 × 38 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIncludes:\u003c\/strong\u003e Complete DIY kit with all components\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCustomizable:\u003c\/strong\u003e Yes — adjustable sensitivity via onboard potentiometer\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhy You'll Love This Module\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e🔆 \u003cstrong\u003eLight-Level Triggered Output\u003c\/strong\u003e — Automatically switches on or off based on detected light intensity, ideal for dusk-to-dawn automation, street light controllers, and smart home DIY builds.\u003c\/li\u003e\n  \u003cli\u003e⚙️ \u003cstrong\u003eAdjustable Sensitivity\u003c\/strong\u003e — Fine-tune the light threshold with the onboard potentiometer to suit your specific environment and project needs.\u003c\/li\u003e\n  \u003cli\u003e🔌 \u003cstrong\u003eHigh-Power Load Capability\u003c\/strong\u003e — Supports active loads up to 400 mA and passive loads up to 300 W, making it versatile for controlling a wide range of devices.\u003c\/li\u003e\n  \u003cli\u003e📐 \u003cstrong\u003eCompact Form Factor\u003c\/strong\u003e — At just 45 × 38 mm, this module fits neatly into enclosures, project boxes, and breadboard setups.\u003c\/li\u003e\n  \u003cli\u003e🛠️ \u003cstrong\u003eGreat for Learning \u0026amp; Prototyping\u003c\/strong\u003e — A hands-on way to explore analog comparator circuits, sensor interfacing, and basic automation electronics.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat's in the Box?\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1× LM393 Light-Controlled Switch DIY Kit (all components included)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003ePerfect For\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eElectronics hobbyists and makers\u003c\/li\u003e\n  \u003cli\u003eSTEM students and classroom projects\u003c\/li\u003e\n  \u003cli\u003eAutomatic lighting control circuits\u003c\/li\u003e\n  \u003cli\u003eSmart home and automation DIY builds\u003c\/li\u003e\n  \u003cli\u003ePrototyping and breadboard experimentation\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eRelated Products You May Like\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/ccb-flat-round-spacer-beads-diy-jewelry-making\"\u003e4\/6mm CCB Flat Round Spacer Beads – DIY Jewelry Making\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/round-aluminum-wire-diy-jewelry-making-1mm-3mm\"\u003eRound Aluminum Wire 1mm–3mm | DIY Jewelry Making Wire\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eLearn more: \u003ca href=\"https:\/\/www.epa.gov\/recycle\/used-lithium-ion-batteries\" target=\"_blank\" rel=\"noopener\"\u003eEPA guidance on lithium-ion battery handling\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: What does the LM393 Photosensitive Sensor Module do?\u003c\/h4\u003e\n\u003cp\u003eA: The LM393 Photosensitive Sensor Module detects the ambient light level in its environment and triggers a switch output accordingly. When light falls below (or rises above) a set threshold — adjusted via the onboard potentiometer — the module activates or deactivates a connected load, making it ideal for automated lighting circuits and DIY electronics projects.\u003c\/p\u003e\n\n\u003ch4\u003eQ: What load can the LM393 Light-Controlled Switch handle?\u003c\/h4\u003e\n\u003cp\u003eA: The module supports active load currents up to 400 mA and passive load power up to 300 W, giving you flexibility to control a variety of devices including LEDs, relays, small motors, and other electronic components in your DIY builds.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Is this module beginner-friendly?\u003c\/h4\u003e\n\u003cp\u003eA: Yes! The LM393 DIY kit is designed to be approachable for hobbyists and students alike. It comes with all components needed to assemble the circuit, and its straightforward design makes it a great hands-on introduction to analog comparator circuits, photosensors, and basic automation electronics.\u003c\/p\u003e\n\n\u003ch4\u003eQ: What are the dimensions of the sensor board?\u003c\/h4\u003e\n\u003cp\u003eA: The assembled sensor module measures 45 × 38 mm — a compact size that fits easily into project enclosures, on breadboards, or within larger DIY electronic builds.\u003c\/p\u003e\n\u003c!-- production-packaging-notice --\u003e\n\u003ch3\u003eProduction \u0026amp; Packaging Notice\u003c\/h3\u003e\n\u003cp\u003eTo maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What does the LM393 Photosensitive Sensor Module do?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The LM393 Photosensitive Sensor Module detects the ambient light level in its environment and triggers a switch output accordingly. 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