The OKY3275 is an infrared sensor manufactured by OKYSTAR. It is 28mm x 23mm x 8mm in size and provides long-distance detection and high sensitivity. It has a built-in infrared light-emitting diode and a remote receiver that can accurately detect signals from up to 10 meters away. Its main function is as an object recognition component, allowing for the detection of motion and distance for a variety of applications such as security systems, automation, and robotics. Some features include a built-in amplifier, hysteresis and noise immunity, adjustable detection range. It is ideal for use with PIR (passive infrared) sensors, various types of intercoms, and smart home products.