| | | Ok Ok... Sorry ... Here I have a Photo of these Sensors... The number on it is : IN THE FIRST LINE : QRB1114 IN THE SECOND LINE: QT820 It works with infra red... And I bought it in a sensor pach at: WWW.GLEASONRESEARCH.COM (26 years ago, 7-Jan-99, to lugnet.robotics.handyboard)
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