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Product Description
Sensing distance up to 23' (7 m)
Bright red sender LED simplifies alignment and saves installation time
High switching frequencies up to 1000 Hz

The MCS-655M and MCS-655P is a photo-reflective NPN open collector photo sensor with Light/Dark activated output that operates up to 1000 Hz. For simplified installation purposes the integral LED aids in the MCS-655M and MCS-655P model comes in a robust metal housing with a connection cable, LED status indicator, sensitivity control and mounting nuts.


  • Sensing distance up to 23' (7 m)
  • Polarizing filter ensures reliable detection of highly-reflective objects
  • Bright power and signal LEDs with 360° visibility offer quick and simple troubleshooting, reducing maintenance time and costs
  • Bright red sender LED simplifies alignment and saves installation time
  • Reflector Included
  • High switching frequencies up to 1000 Hz
  • The flat and smooth lens reduces the collection of dust and dirt, ensuring reliable operation
  • Polarizing filter prevents false readings on reflective surfaces, reducing errors


Sensor / Detection PrinciplePhotoelectric retro-reflective sensor
Housing Length2.5" (62.9 mm)
Housing Thread DiameterM18 x 1
Sensing Range2" – 23' (0.05 -7 m)
Light/SourceVisible red LED
Light Spot @ Distance 19.7'(6 m)15.75" (400 mm)
Wave Length645 nm
Sensitivity AdjustmentTurnable Potentiometer over 270°
Supply Voltage10-30 V DC
Switching OutputNPN open collector, Light/dark-switching, Selectable via L/D control wire
Signal Voltage NPN HIGH ⁄ LOWApprox. VS ≤  1.8 V
Output Current Max.100 mA
Response Time MCS-655M≤ 0.5ms
Response Time MCS-655P0.5ms
Switching Frequency1,000 Hz with light/dark ratio 1:1
Angle of DispersionCa. 4.5 °
Ambient Operating Temperature-13 to 131 °F (-25 to 55 °C)
Housing Material MCS-655MNickel-plated brass
Housing Material MCS-655PPBT and PC
Optics MaterialPMMA
Cable MaterialPVC
Connection TypeCable, 4-wire, 6.6'(2 m)
Circuit ProtectionInputs and output reverse-polarity protected; outputs overcurrent and short-circuit protected
Weight MCS-655M3.35oz (95 g)
Weight MCS-655P2.2oz (62 g)
Enclosure RatingIP 67
Items SuppliedFastening nuts (2 x), Reflector target, reflection tape


Shimpo MCS-655M Reflective Sensor - Data Sheet
Shimpo MCS-655P Reflective Sensor - Data Sheet