Infra Red reflective proximity sensor

This simple IR proximity sensor uses 'modulated burst' sensing method to avoid false triggering and interference.
It has a range of about 4 -12cm (depending on the type of reflective surface), and will not respond at all to matt black. Response time is around 10mS, and a small amount of hysteresis (about 1cm) is included to avoid 'chattering' at limit range
Vertical and horizontal axis of 'sight' versions will be available.


  • Up to 12cm range
  • Simple interface (2.7 - 3.6V at 7mA nominal, cmos output)
  • Low current consumption: 6mA average (20mA peak)
    0.5mA (reset)
  • Small size: 22 x 17 x 13 mm


  • Robotics
  • Alarms
  • Optical switches
  • Industrial sensing