{"product_id":"5mm-ldr-sensor-photoresistor-photo-cell-20-30k-gl5537-1","title":"5mm LDR Sensor Photoresistor Photo Cell 20-30K – GL5537-1","description":"\u003ch1\u003e5mm LDR Sensor Photoresistor Photo Cell 20-30K – GL5537-1\u003c\/h1\u003e\n\n\u003cp\u003eThe 5mm LDR Sensor (GL5537-1) is a photoresistor whose resistance decreases with increasing light intensity. It is ideal for light-sensing applications in electronics projects, from automatic night lamps to light-activated switches.\u003c\/p\u003e\n\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eType: Photoresistor (Light Dependent Resistor)\u003c\/li\u003e\n\u003cli\u003eDiameter: 5mm\u003c\/li\u003e\n\u003cli\u003eDark Resistance: 20-30K ohms (at 10 Lux)\u003c\/li\u003e\n\u003cli\u003eLight Resistance: 10-20K ohms (at 100 Lux)\u003c\/li\u003e\n\u003cli\u003eResponse Time: ~30ms\u003c\/li\u003e\n\u003cli\u003eOperating Temperature: -30°C to +70°C\u003c\/li\u003e\n\u003cli\u003eEncapsulation: Epoxy resin\u003c\/li\u003e\n\u003cli\u003eLead Material: Tin-plated copper\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCompatible with\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eArduino (Uno, Nano, Mega)\u003c\/li\u003e\n\u003cli\u003eESP32 and ESP8266\u003c\/li\u003e\n\u003cli\u003eRaspberry Pi (any model)\u003c\/li\u003e\n\u003cli\u003eSTM32 microcontrollers\u003c\/li\u003e\n\u003cli\u003e555 timer circuits\u003c\/li\u003e\n\u003cli\u003eAny 3.3V or 5V logic system\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhat you can build with it\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eAutomatic night lamp that turns on when dark\u003c\/li\u003e\n\u003cli\u003eLight-activated alarm or buzzer circuit\u003c\/li\u003e\n\u003cli\u003eSolar tracker or light intensity meter\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eBuilt and Backed by Compoden\u003c\/h2\u003e\n\u003cp\u003eCompoden has supplied electronics components to makers, schools, and engineering colleges across India for over 10 years. Every GL5537-1 LDR comes with access to our AI build companion — delivered via QR code, email, or WhatsApp — that helps you wire and program this sensor into a working project. Pay your way: UPI, cards, or Cash on Delivery, anywhere in India.\u003c\/p\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eWhat is the difference between dark resistance and light resistance?\u003c\/summary\u003e\n\u003cp\u003eDark resistance is the resistance measured when the LDR is in complete darkness (typically 20-30K ohms for this model). Light resistance is the resistance when exposed to a standard light level (100 Lux), which is lower (10-20K ohms). The sensor works by measuring this change.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eWhat payment options are available for the 5mm LDR Sensor GL5537-1?\u003c\/summary\u003e\n\u003cp\u003eWe accept UPI (Google Pay, PhonePe, Paytm), all major credit\/debit cards, and Cash on Delivery (COD) for orders across India. No minimum order value for COD.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eHow long does delivery take and where do you ship?\u003c\/summary\u003e\n\u003cp\u003eWe ship the 5mm LDR Sensor GL5537-1 across India including Delhi, Mumbai, Bangalore, Hyderabad, Chennai, and Pune. Delivery typically takes 3-7 business days depending on your location.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003cp\u003eBuy the 5mm LDR Sensor GL5537-1 online in India with COD and UPI available across India.\u003c\/p\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@type\": \"Product\",\n  \"name\": \"5mm LDR Sensor Photoresistor Photo Cell 20-30K – GL5537-1\",\n  \"description\": \"5mm LDR Sensor GL5537-1 photoresistor for light detection projects. Compatible with Arduino, ESP32, Raspberry Pi.\",\n  \"sku\": \"GL5537-1\",\n  \"brand\": {\n    \"@type\": \"Brand\",\n    \"name\": \"Generic\"\n  },\n  \"offers\": {\n    \"@type\": \"Offer\",\n    \"price\": \"10.49\",\n    \"priceCurrency\": \"INR\",\n    \"availability\": \"https:\/\/schema.org\/InStock\",\n    \"url\": \"https:\/\/compoden.in\/products\/5mm-ldr-sensor-gl5537-1\"\n  },\n  \"author\": {\n    \"@type\": \"Organization\",\n    \"name\": \"Compoden\"\n  },\n  \"mainEntityOfPage\": {\n    \"@type\": \"FAQPage\",\n    \"mainEntity\": [\n      {\n        \"@type\": \"Question\",\n        \"name\": \"What is the difference between dark resistance and light resistance?\",\n        \"acceptedAnswer\": {\n          \"@type\": \"Answer\",\n          \"text\": \"Dark resistance is the resistance measured when the LDR is in complete darkness (typically 20-30K ohms for this model). Light resistance is the resistance when exposed to a standard light level (100 Lux), which is lower (10-20K ohms). The sensor works by measuring this change.\"\n        }\n      },\n      {\n        \"@type\": \"Question\",\n        \"name\": \"What payment options are available for the 5mm LDR Sensor GL5537-1?\",\n        \"acceptedAnswer\": {\n          \"@type\": \"Answer\",\n          \"text\": \"We accept UPI (Google Pay, PhonePe, Paytm), all major credit\/debit cards, and Cash on Delivery (COD) for orders across India. No minimum order value for COD.\"\n        }\n      },\n      {\n        \"@type\": \"Question\",\n        \"name\": \"How long does delivery take and where do you ship?\",\n        \"acceptedAnswer\": {\n          \"@type\": \"Answer\",\n          \"text\": \"We ship the 5mm LDR Sensor GL5537-1 across India including Delhi, Mumbai, Bangalore, Hyderabad, Chennai, and Pune. Delivery typically takes 3-7 business days depending on your location.\"\n        }\n      }\n    ]\n  }\n}\n\u003c\/script\u003e","brand":"Compoden","offers":[{"title":"Default Title","offer_id":53492644413805,"sku":"CDN-2077","price":14.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0999\/3997\/5533\/files\/5mm-ldr-sensor-photoresistor-photo-cell-20-30k-gl5537-1-5146787.jpg?v=1785259568","url":"https:\/\/compoden.com\/products\/5mm-ldr-sensor-photoresistor-photo-cell-20-30k-gl5537-1","provider":"Compoden","version":"1.0","type":"link"}