TSOP series sensors are | Microcontroller › 8051 › IR LED AND RECEIVER › TSOP series sensors are September 6, 2014 at 7:15 pm #12131 Ashutosh BhattParticipant TSOP series sensors are completely different then ordinary IR receivers (photo diodes). TSOP sensor only detects IR light of 30 KHz to 40 KHz light. they do not respond to simple IR light. while photo diode detects normal IR light even. read datasheets of TSOP sensors for detail
