{"product_id":"light-sensitive-photoresistor-ldr","title":"GL20528 Light Sensitive Photoresistor LDR","description":"\u003cp\u003e\u003cspan data-sheets-root=\"1\"\u003e\u003cstrong\u003eGL20528 Light Sensitive Photoresistor LDR\u003c\/strong\u003e\u003cbr\u003eThe GL20528 (often categorized as the GM20528) is constructed using a high-grade Cadmium Sulfide (CdS) semiconductor. Because of its physical size, it is remarkably stable and serves as a highly reliable \"area sensor\" that averages the light in an environment rather than reacting to tiny, localized glares.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-sheets-root=\"1\"\u003e\u003cbr\u003e\u003cstrong\u003eWhy it’s an Industrial-Grade Essential:\u003c\/strong\u003e\u003cbr\u003e• Maximum Light Capture: The 20mm surface area is roughly 16 times larger than a standard 5mm LDR. This makes it the primary choice for detecting low-intensity light in shadows or during the earliest moments of twilight.\u003cbr\u003e• High Voltage Handling: Rated for up to 500V DC, this LDR is robust enough to be used in some specialized high-voltage control circuits (with proper isolation) that would destroy smaller sensors.\u003cbr\u003e• Gamma Stability: The gamma value indicates a very predictable relationship between light intensity and resistance. This \"linearity\" makes it much easier to calibrate in software for accurate light-level measurements.\u003cbr\u003e• Epoxy-Coated Durability: The sensing surface is sealed with a rugged epoxy coating, protecting the CdS material from humidity and environmental contaminants, which is vital for long-term outdoor use.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-sheets-root=\"1\"\u003e\u003cbr\u003e\u003cstrong\u003eTechnical Capabilities:\u003c\/strong\u003e\u003cbr\u003e• Spectral Peak: 560 nm (Perfectly aligned with the peak sensitivity of the human eye).\u003cbr\u003e• Light Resistance (10 Lux): 10 – 20 kΩ.\u003cbr\u003e• Dark Resistance: ~2 MΩ (Acts as a near-perfect insulator in total darkness).\u003cbr\u003e• Power Dissipation: 500 mW (Much higher than standard LDRs, allowing for more robust circuit designs).\u003cbr\u003e• Response Time: ~30ms (Fast enough for most automation and human-interaction triggers).\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-sheets-root=\"1\"\u003e\u003cbr\u003e\u003cstrong\u003eBest For:\u003c\/strong\u003e\u003cbr\u003eThe GL20528 is the primary choice for professional street lighting controllers, agricultural greenhouse monitors, high-accuracy camera exposure systems, and industrial smoke detectors.\u003cbr\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/p\u003e","brand":"TinkEdge","offers":[{"title":"Default Title","offer_id":46404864934087,"sku":"TE-LIGSE-099","price":107.0,"currency_code":"INR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0774\/6620\/6407\/files\/GL20528LightSensitivePhotoresistorLDR_1.png?v=1776773493","url":"https:\/\/shop.tinkedge.tech\/products\/light-sensitive-photoresistor-ldr","provider":"TinkEdge","version":"1.0","type":"link"}