{"product_id":"ir-led-940nm-infrared-emitter-for-night-vision-remote-control","title":"IR LED 940nm – Infrared Emitter for Night Vision \u0026 Remote Control","description":"\u003ch1\u003eIR LED 940nm – Infrared Emitter for Night Vision \u0026amp; Remote Control\u003c\/h1\u003e\n\n\u003cp class=\"product-lede\"\u003eThis 940nm infrared LED emits invisible light ideal for night vision, remote controls, object sensors, and proximity switches. Works with Arduino, ESP32, and Raspberry Pi. 5mm clear lens, low 1.25V forward voltage.\u003c\/p\u003e\n\n\u003ch2\u003eKey Specifications\u003c\/h2\u003e\n\u003ctable class=\"specs-table\"\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003cth\u003ePeak Emission Wavelength\u003c\/th\u003e\n\u003ctd\u003e940 nm\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eForward Voltage (V\u003csub\u003eF\u003c\/sub\u003e)\u003c\/th\u003e\n\u003ctd\u003e1.2 V – 1.4 V (1.25 V typ. @ 20 mA)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eForward Current (Continuous)\u003c\/th\u003e\n\u003ctd\u003e30 mA (max. 50 mA peak)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003ePower Dissipation\u003c\/th\u003e\n\u003ctd\u003e75 mW\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eViewing Angle\u003c\/th\u003e\n\u003ctd\u003e20° – 30°\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eLens Color\u003c\/th\u003e\n\u003ctd\u003eClear\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003ePackage\u003c\/th\u003e\n\u003ctd\u003e5 mm Round Through-Hole\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eLead Spacing\u003c\/th\u003e\n\u003ctd\u003e2.54 mm (0.1 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eWhat You Can Build With This\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/arduino-uno-co-detector-kit-with-sms-alert-and-exhaust-fan-control\"\u003e\n\u003cstrong\u003eInfrared proximity detector:\u003c\/strong\u003e Pair with an IR photodiode to build an obstacle‑sensing alarm using an Arduino Uno and a buzzer.\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWiFi‑controlled remote:\u003c\/strong\u003e Use an ESP32 to broadcast IR commands over WiFi to control a TV or air conditioner from a smartphone.\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/kit-pir-motion-night-light\"\u003e\n\u003cstrong\u003eNight vision illuminator:\u003c\/strong\u003e Drive an array of these LEDs with a Raspberry Pi and a PIR sensor to automatically light a dark room for an IR camera.\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCBSE Class 11–12 \/ ATL Lab:\u003c\/strong\u003e Demonstrate optical wireless communication by sending Morse code pulses between two Arduino boards using IR emitter‑detector pairs.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eB.Tech final year \/ Smart India Hackathon:\u003c\/strong\u003e Design a multi‑channel IR data link for secure line‑of‑sight transmission between devices, with error detection and protocol implementation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCompatibility\u003c\/h2\u003e\n\u003ctable class=\"compat-table\"\u003e\n  \u003cthead\u003e\u003ctr\u003e\n\u003cth\u003ePlatform\u003c\/th\u003e\n\u003cth\u003eCompatible\u003c\/th\u003e\n\u003cth\u003eConnection\u003c\/th\u003e\n\u003cth\u003eLibrary \/ Method\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003eArduino Uno R3\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003ctd\u003eAny digital pin (e.g., D2) via 220Ω resistor to anode; cathode to GND\u003c\/td\u003e\n\u003ctd\u003edigitalWrite()\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eArduino Nano\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003ctd\u003eAny digital pin (e.g., D3) via 220Ω resistor\u003c\/td\u003e\n\u003ctd\u003edigitalWrite()\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eArduino Mega 2560\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003ctd\u003eAny digital pin via 220Ω resistor\u003c\/td\u003e\n\u003ctd\u003edigitalWrite()\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eESP8266 NodeMCU\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003ctd\u003eAny GPIO (e.g., D4) via 220Ω resistor\u003c\/td\u003e\n\u003ctd\u003edigitalWrite() \/ ESP8266WiFi\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eESP32 Dev Board\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003ctd\u003eAny GPIO (e.g., GPIO15) via 220Ω resistor\u003c\/td\u003e\n\u003ctd\u003edigitalWrite() \/ IRremoteESP32\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eRaspberry Pi Pico\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003ctd\u003eAny GP pin (e.g., GP0) via 220Ω resistor\u003c\/td\u003e\n\u003ctd\u003emachine.Pin()\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eRaspberry Pi 4 \/ 5\u003c\/td\u003e\n\u003ctd\u003eYes, with transistor driver\u003c\/td\u003e\n\u003ctd\u003eGPIO (e.g., GPIO17) to NPN transistor base, LED via collector with 220Ω resistor; emitter to GND\u003c\/td\u003e\n\u003ctd\u003eRPi.GPIO or gpiozero\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eWiring and Interface Notes\u003c\/h2\u003e\n\u003cp\u003eConnect the longer anode leg to a digital output pin through a 220Ω current‑limiting resistor. The shorter cathode leg goes directly to GND. Never exceed 30 mA continuous current, and match the resistor value to your board’s logic level (3.3V or 5V) to avoid damage.\u003c\/p\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cdiv class=\"faq\"\u003e\n  \u003cdiv class=\"faq-item\"\u003e\n    \u003ch3\u003eDoes this IR LED produce visible red light when powered on?\u003c\/h3\u003e\n    \u003cp\u003eNo, it emits light in the near‑infrared spectrum (940nm) invisible to the human eye. You can quickly check operation by viewing the LED through a smartphone camera, which will show a faint purple glow.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"faq-item\"\u003e\n    \u003ch3\u003eCan I use this LED as a direct replacement in standard remote controls?\u003c\/h3\u003e\n    \u003cp\u003eYes, 940nm is the wavelength used in most consumer IR remotes. Ensure your circuit drives the LED with the correct current and, for longer range, modulate it at the typical 38 kHz carrier frequency.\u003c\/p\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@graph\": [\n    {\n      \"@type\": \"Product\",\n      \"@id\": \"https:\/\/compoden.in\/products\/ir-led-940nm-infrared-emitter-for-night-vision-remote-control#product\",\n      \"name\": \"IR LED 940nm – Infrared Emitter for Night Vision \u0026 Remote Control\",\n      \"description\": \"940nm infrared LED emitter for night vision cameras, IR remotes, obstacle detection. 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