Wenglor OTDK502A0002 Reflex Sensor Energetic

The transmitter and receiver in these sensors are located in a single housing.

The transmitter and receiver in these sensors are located in a single housing. The sensor evaluates transmitted light reflected back from the object. The output is switched as soon as an object passes the selected range. Bright objects reflect more light than dark objects, and can thus be recognized from greater distances.


  • Clever inclusive mounting technology
  • Adjustable detection range
  • Simple installation
  • Large detection range
  • Minimal installation space


Detection of Palms in Disinfectant Dispensers with Reflex Sensors

Disinfection stations for hands are provided in public areas such as shops, schools, train stations, airports, football stadiums, gyms and many more to meet hygiene standards. The automated disinfectant dispensers have one inlet for each hand. Compact reflex sensors are installed in narrow areas for contactless detection of the hands. The disinfection cycle starts as soon as the sensor has detected that both hands are present. This hygiene measure can combat the spread of germs quickly, effectively and fully automatically.

Energetic Reflex Sensors

Reflex sensors check objects for presence, check stack heights or perform counting tasks. They are used when objects need to be detected without a defined background. For this purpose, they use red light or infrared light according to the energy principle.


Optical Data

Range 500 mm
Switching Hysteresis  < 15 %
Light Source Infrared Light
Service Life (T = +25 °C) 100,000 h
Max. Ambient Light 10,000 Lux
Opening Angle 5 °

Electrical Data

Supply Voltage 10 … 30 V DC
Current Consumption (Ub = 24 V) < 30 mA
Switching Frequency 500 Hz
Response Time 1 ms
Temperature Drift < 10 %
Temperature Range -25 … 60 °C
Switching Output Voltage Drop < 2.5 V
PNP Switching Output/Switching Current 200 mA
Residual Current Switching Output < 50 µA
Short Circuit Protection yes
Reverse Polarity Protection yes
Overload Protection yes
Protection Class III

Mechanical Data

Setting Method Potentiometer
Housing Material Plastic
Degree of Protection IP67
Connection M12 × 1; 4-pin

Safety-relevant Data

MTTFd (EN ISO 13849-1) 2,200.73 a

General Data

Scope of delivery Mounting Console


PNP NO/NC antivalent yes

Adjustable parameters

Circuit NC

Table 1

Detection Range 100 mm 300 mm 500 mm
Light Spot Diameter 11 mm 26 mm 41 mm


Datasheet : Wenglor OTDK502A0002 Reflex Sensor Energetic

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