Sign In SHOP BLOG LEARN FORUMS 0 Items VIDEOS SENSORS / MOTION / IR BREAK BEAM SENSOR - 3MM LEDS IR Break Beam Sensor - 3mm LEDs PRODUCT ID: 2167 OUT OF STOCK Please enter your details below and we will send you an email when this item is back in stock. You will only be emailed about this product! YOUR NAME YOUR EMAIL NOTIFY ME ADD TO WISHLIST DESCRIPTION TECHNICAL DETAILS DESCRIPTION Infrared (IR) break-beam sensors are a simple way to detect motion. They work by having an emitter side that sends out a beam of human-invisible IR light, then a receiver across the way which is sensitive to that same light. When something passes between the two, and its not transparent to IR, then the 'beam is broken' and the receiver will let you know. Compared to PIR sensors, breakbeams are faster and allow better control of where you want to detect the motion. Compared to Sonar modules, they're less expensive. However, you do need both emitter and receiver on opposite sides of the area you want to monitor. This is the 3mm IR version. It works up to 25cm / 10". You can power it from 3.3V or 5V, but 5V will get you better range and is what we suggest. The receiver is open collector transistor output which means that you do need a pull up resistor if you want to read a digital signal off the signal wire. Most microcontrollers have the ability to turn on a built in pull up resistor. If you do not, connect a 10K resistor between the white wire of the receiver and the red wire. If you want to control a relay or LED or whatever, it can sink up to 100mA to ground Check out our IR breakbeam tutorial for how to get started quickly We also carry a 5mm version that works for slightly longer distances. New Products 12/10/2014 TECHNICAL DETAILS Datasheet Sensing Distance: Approx 25cm / 10" Power Voltage: 3.3 - 5.5VDC Emitter Current Draw: 10mA @ 3.3V, 20mA @ 5V Output Current Capability of receiver: 100mA sink Transmitter/Receiver LED Angle: 10 Response Time: <2 ms Dimensions: 20mm x 10mm x 8mm / 0.8" x 0.4" x 0.3" Cable Length: 234mm / 9.2" Weight (of each half): ~3g LEARN IR Breakbeam Sensors Get going quickly with these simple IR breakbeam sensors Toy Car Speed Timer Find out how fast your toy car is. MAY WE ALSO SUGGEST... IR Break Beam Sensor 5mm LEDs Maxbotix Weather-Resistant Ultrasonic Rangefinder Maxbotix Ultrasonic Rangefinder - LV-EZ2 Maxbotix Ultrasonic Rangefinder - HRLV-EZ4 Maxbotix Ultrasonic Rangefinder - HR-USB-EZ1 IR Distance Sensor Includes Cable (100cm- Sharp GP2Y0D810Z0F Digital Distance Sensor with Maxbotix Ultrasonic Rangefinder - LV-EZ3 Maxbotix Ultrasonic Rangefinder - LV-EZ0 Maxbotix Ultrasonic Rangefinder - HRLV-EZ0 IR distance sensor includes cable (10cm-80cm) VCNL4010 Proximity/Light sensor DISTRIBUTORS CONTACT SUPPORT DISTRIBUTORS EDUCATORS EXPAND TO SEE DISTRIBUTORS "That brain of mine is something more than merely mortal; as time will show" - Ada Lovelace JOBS FAQ SHIPPING & RETURNS TERMS OF SERVICE PRIVACY & LEGAL ABOUT US ENGINEERED IN NYC Adafruit (R) 4.9