{"product_id":"gy-2561-tsl2561-ambient-light-sensor-module-high-precision-luminosity-detection-board-for-iot-industrial-applications","title":"GY‑2561 TSL2561 Ambient Light Sensor Module – High‑Precision Luminosity Detection Board for IoT \u0026 Industrial Applications","description":"\u003ch2\u003eProduct Description\u003c\/h2\u003e\n\u003cp\u003eThe GY‑2561 TSL2561 Ambient Light Sensor Module integrates a TSL2561 digital luminosity sensor on a compact breakout board, giving you direct lux readings instead of raw analog values. It features dual photodiodes (full‑spectrum and infrared) and an internal ADC, allowing it to approximate human‑eye response and maintain accuracy across a wide range of lighting conditions—from dim indoor light to bright sunlight.\u003c\/p\u003e\n\u003cp\u003eWith a standard I²C interface, programmable gain, and integration times, this module fits naturally into IoT and industrial systems that need precise and repeatable light measurements. It is well suited for smart‑lighting controls, energy‑efficient building automation, and environmental monitoring devices that log or react to changes in ambient illumination.\u003c\/p\u003e\n\u003ch2\u003eIdeal Uses\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eSmart‑lighting and industrial lighting control, turning fixtures up or down based on measured lux levels.\u003c\/li\u003e\n\u003cli\u003eDisplay and signage dimming for kiosks, HMIs, and industrial panels that must remain readable without wasting power.\u003c\/li\u003e\n\u003cli\u003eIoT environmental monitoring nodes that report ambient light as part of building or agricultural telemetry.\u003c\/li\u003e\n\u003cli\u003eIndustrial and laboratory data logging where repeatable, digital light measurements are needed over time.\u003c\/li\u003e\n\u003cli\u003eEducational and R\u0026amp;D projects involving photometry, lux measurement, and I²C sensor integration.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eCompatibility\u003c\/h2\u003e\n\u003cp\u003eInterfaces via I²C (SDA\/SCL), compatible with Arduino, ESP32\/ESP8266, STM32, Raspberry Pi, and most other microcontrollers and SBCs.\u003c\/p\u003e\n\u003cp\u003eTypically supports 3.3 V logic and supply; many GY‑2561 boards include basic regulation\/level adaptation so they can be used with 5 V Arduino boards (check your specific module’s markings and documentation).\u003c\/p\u003e\n\u003cp\u003eCompatible with common TSL2561 software libraries that provide direct lux calculations and automatic gain\/integration‑time handling.\u003c\/p\u003e\n\u003ch2 class=\"font-editorial font-bold mb-2 mt-4 [.has-inline-images_\u0026amp;]:clear-end text-lg first:mt-0 md:text-lg [hr+\u0026amp;]:mt-4\" id=\"key-features\"\u003eKey Features\u003c\/h2\u003e\n\u003cul class=\"marker:text-quiet list-disc pl-8\"\u003e\n\u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003e\n\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:align-top\"\u003e\u003cstrong\u003eDigital ambient light sensor (TSL2561)\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003ecapable of reporting lux values over a wide dynamic range.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003e\n\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:align-top\"\u003e\u003cstrong\u003eDual photodiodes\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e(visible + IR) with on‑chip logic to approximate human eye sensitivity.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003e\n\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:align-top\"\u003e\u003cstrong\u003e16‑bit ADC\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003ewith selectable integration time and gain settings for low‑light and high‑light environments.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003e\n\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:align-top\"\u003e\u003cstrong\u003eI²C address selection\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003evia solder pads\/jumpers on many GY‑2561 boards, allowing multiple sensors on the same bus.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003e\n\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:align-top\"\u003eLow power consumption, with\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003epower‑down modes\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003esuitable for battery‑powered IoT devices.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003e\n\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:align-top\"\u003eCompact PCB with clearly labeled pins and mounting holes, easy to embed in industrial enclosures or sensor hubs.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 class=\"font-editorial font-bold mb-2 mt-4 [.has-inline-images_\u0026amp;]:clear-end text-lg first:mt-0 md:text-lg [hr+\u0026amp;]:mt-4\" id=\"technical-specs-typical-moduledependent\"\u003eTechnical Specs (Typical, Module‑Dependent)\u003c\/h2\u003e\n\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:align-top\"\u003eExact values depend on the specific GY‑2561 board revision; the list below reflects common TSL2561‑based modules:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:align-top\"\u003eSensor IC: TSL2561 digital luminosity (ambient light) sensor.\u003c\/li\u003e\n\u003cli class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:align-top\"\u003eInterface: I²C (up to 400 kHz).\u003c\/li\u003e\n\u003cli class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:align-top\"\u003eSupply Voltage: typically 3.0–3.6 V at the sensor; many modules accept 3.3–5 V via on‑board regulation.\u003c\/li\u003e\n\u003cli class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:align-top\"\u003eOutput: 16‑bit digital counts from visible + IR channels; libraries convert to lux.\u003c\/li\u003e\n\u003cli class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:align-top\"\u003eDynamic Range: from very low light (indoor) to bright sunlight using auto gain and integration control.\u003c\/li\u003e\n\u003cli class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:align-top\"\u003eOperating Temperature: suitable for typical indoor and light industrial environments (refer to IC datasheet for exact range).\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 class=\"font-editorial font-bold mb-2 mt-4 [.has-inline-images_\u0026amp;]:clear-end text-lg first:mt-0 md:text-lg [hr+\u0026amp;]:mt-4\" id=\"whats-included\"\u003eWhat’s Included\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:align-top\"\u003e1 × GY‑2561 TSL2561 Ambient Light Sensor Module\u003c\/li\u003e\n\u003cli class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:align-top\"\u003e1 × Pin‑header strip (often included loose for optional soldering, depending on supplier)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 class=\"font-editorial font-bold mb-2 mt-4 [.has-inline-images_\u0026amp;]:clear-end text-lg first:mt-0 md:text-lg [hr+\u0026amp;]:mt-4\" id=\"safety-note\"\u003eSafety Note\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:align-top\"\u003eThis module is intended for\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003elow‑voltage electronics\u003c\/strong\u003e; ensure correct wiring of VCC, GND, SDA, and SCL, and do not exceed the rated supply voltage.\u003c\/li\u003e\n\u003cli class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:align-top\"\u003eFor reliable lux measurements, avoid covering the sensor, and mount it where it has a clear line of sight to the ambient light you want to measure (not directly behind tinted covers unless calibrated).\u003c\/li\u003e\n\u003cli class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:align-top\"\u003eIn industrial environments, protect the board from dust, moisture, and chemical contaminants; use a transparent window or enclosure if necessary and periodically clean or recalibrate if exposure conditions change.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"sugar","offers":[{"title":"Default Title","offer_id":44922563559559,"sku":null,"price":10.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0736\/7763\/5719\/files\/GY_2561TSL2561AmbientLightSensorModuletop.jpg?v=1781873651","url":"https:\/\/sugarstore.dev\/products\/gy-2561-tsl2561-ambient-light-sensor-module-high-precision-luminosity-detection-board-for-iot-industrial-applications","provider":"sugar","version":"1.0","type":"link"}