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100% Brand new and high quality
- Item :Â 5V Laser Detector Sensor
- Dimensions :Â 1.52*2.22CM
- output high level when receive laser signal;
- output low level when not receive laser signal.
- The sensor uses a non-modulated laser receiver, please use indoors where no light, sunlight or other fixtures may interfere, recommended for use in dark environments

MFRC 522 RC522 RFID NFC Tag 13.56mhz Card Reader Writer Module 








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