Working on a robotics, automation, or Arduino project? These little infrared sensor modules are super useful. You get two pairs (so four sensors total) in the pack. They work on the 'IR blocking' principle – they emit an infrared beam and detect when an object comes within 2 to 30cm to break it. They run on low voltage (DC 4.5 to 5.5V), drawing about 20mA from the emitter and 10mA from the receiver, with a max output current of 70mA. They have a super fast response time of just 2ms. Each module comes with three wires (about 23.5cm long): red for power ( ), black for ground (-), and white for the signal output. They're made of lightweight plastic and are perfect for building obstacle-avoidance robots, automatic hand dryers, item counters, or security systems. A fantastic, affordable component for makers, students, and hobbyists to add sensing to their creations.
