{"product_id":"gy-2561-tsl2561-luminosity-infrared-light-sensor-module-arduino","title":"GY-2561 TSL2561 Light Sensor Module for Arduino – 1 or 2 Pack","description":"\u003ch2\u003eGY-2561 TSL2561 Luminosity \u0026amp; Infrared Light Sensor Module for Arduino\u003c\/h2\u003e\n\u003cp\u003eUpgrade your electronics projects with the \u003cstrong\u003eGY-2561 TSL2561 Luminosity Sensor Breakout Module\u003c\/strong\u003e — a compact, high-precision light-sensing solution designed for makers, engineers, and Arduino enthusiasts. Whether you're building smart lighting systems, ambient light detectors, or data-logging projects, this module delivers accurate lux readings across a wide dynamic range.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTSL2561 Chip:\u003c\/strong\u003e Industry-proven light-to-digital converter that measures both broadband (visible + infrared) and infrared light independently for true lux calculation.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWide Dynamic Range:\u003c\/strong\u003e Detects light levels from 0.1 to 40,000+ lux, making it ideal for both dimly lit and brightly lit environments.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e3V Supply Voltage:\u003c\/strong\u003e Low-power design compatible with 3.3V microcontrollers and Arduino boards.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eI²C Interface:\u003c\/strong\u003e Simple two-wire communication (SDA\/SCL) for easy integration with Arduino, Raspberry Pi, and other microcontroller platforms.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSMD Package:\u003c\/strong\u003e Compact surface-mount design on a ready-to-use breakout board — no soldering of tiny components required.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOperating Temperature:\u003c\/strong\u003e 0–120°C, suitable for a broad range of environments.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNo High-Concern Chemicals:\u003c\/strong\u003e Safe for hobbyist and professional use.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePack Options:\u003c\/strong\u003e Available as a 1-piece or 2-piece set — great value for prototyping and redundancy.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eModel:\u003c\/strong\u003e GY-2561 \/ TSL2561\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSupply Voltage:\u003c\/strong\u003e 3V\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInterface:\u003c\/strong\u003e I²C\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePackage Type:\u003c\/strong\u003e SMD Breakout Module\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOperating Temperature:\u003c\/strong\u003e 0–120°C\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCondition:\u003c\/strong\u003e Brand New\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCountry of Origin:\u003c\/strong\u003e Made in Mainland China\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat Can You Build With It?\u003c\/h3\u003e\n\u003cp\u003eThe TSL2561 is perfect for a wide variety of DIY and professional electronics projects, including:\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eAutomatic screen brightness controllers\u003c\/li\u003e\n  \u003cli\u003eSmart home ambient light systems\u003c\/li\u003e\n  \u003cli\u003eOutdoor weather and environment stations\u003c\/li\u003e\n  \u003cli\u003ePlant growth monitoring setups\u003c\/li\u003e\n  \u003cli\u003eSecurity and motion-triggered lighting\u003c\/li\u003e\n  \u003cli\u003eData logging and IoT sensor networks\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eCompatible With\u003c\/h3\u003e\n\u003cp\u003eArduino Uno, Nano, Mega, Leonardo, Raspberry Pi, ESP8266, ESP32, and most I²C-capable microcontroller development boards.\u003c\/p\u003e\n\n\u003ch3\u003eRelated Products You May Like\u003c\/h3\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\/eye-face-protection\" target=\"_blank\" rel=\"noopener\"\u003eOSHA on eye and face protection\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: Is the GY-2561 TSL2561 sensor module compatible with Arduino?\u003c\/h4\u003e\n\u003cp\u003eA: Yes! The GY-2561 TSL2561 luminosity sensor uses the I²C communication protocol (SDA\/SCL), making it fully compatible with Arduino Uno, Nano, Mega, and most other Arduino boards, as well as Raspberry Pi and ESP32\/ESP8266 platforms. Many open-source libraries are available to get you started quickly.\u003c\/p\u003e\n\u003ch4\u003eQ: What is the difference between the 1-piece and 2-piece pack options?\u003c\/h4\u003e\n\u003cp\u003eA: Both packs include the same GY-2561 TSL2561 breakout module. The 2-piece option is ideal for projects that require redundancy, multiple sensor placements, or if you simply want a spare module for future builds — offering better value per unit.\u003c\/p\u003e\n\u003ch4\u003eQ: What voltage does the TSL2561 sensor module operate at?\u003c\/h4\u003e\n\u003cp\u003eA: The GY-2561 module operates at 3V supply voltage, making it compatible with 3.3V logic microcontrollers. Always verify your microcontroller's logic levels before connecting to avoid damage to the module.\u003c\/p\u003e\n\u003ch4\u003eQ: Can this sensor measure infrared light separately from visible light?\u003c\/h4\u003e\n\u003cp\u003eA: Yes. The TSL2561 chip features two photodiodes — one sensitive to broadband light (visible + infrared) and one sensitive to infrared only. This allows the module to calculate accurate lux values by compensating for infrared interference, giving you a more precise ambient light reading.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"Is the GY-2561 TSL2561 sensor module compatible with Arduino?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes! 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