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  • High switching frequency
  • Adjustable switching distance
  • Large detection range
  • Excellent ambient light suppression

HO08PA Reflex Sensor with Background Suppression

available on request
These sensors detect distance by measuring angles. They are particularly good at recognizing objects in front of any background. The color, shape and surface characteristics of the object have practically no influence on sensor switching performance. Also these sensors don't influence each other if their light spots are pointed onto the same spot or against each other.

Optical Data

Range 80 mm
Setting Range 25 ... 80 mm
Switching Hysteresis see Table 1
Light Source Red Light
Service Life (T = +25 °C) 100,000 h
Max. Ambient Light 10,000 Lux
Light Spot Diameter see Table 1

Electrical Data

Supply Voltage 10 ... 30 V DC
Current Consumption (Ub = 24 V) < 40 mA
Switching Frequency 1 kHz
Response Time 500 µs
Temperature Drift < 5 %
Temperature Range -25 ... 60 °C
Switching Output Voltage Drop < 2.5 V
PNP Switching Output/Switching Current 200 mA
Short Circuit Protection yes
Reverse Polarity Protection yes
Overload Protection yes
Protection Class III

Mechanical Data

Setting Method Potentiometer
Housing Material CuZn, nickel-plated
Full Encapsulation yes
Degree of Protection IP67
Connection Cable, 4-wire, 2 m


PNP NO/NC antivalent yes

Adjustable parameters

Circuit NC
All other parameters can be found in the product documentation.

Standards and certificates

B_SYM_CE_01.pdf B_SYM_CE_01.pdf B_SYM_CE_01.pdf B_SYM_CE_01.pdf B_SYM_CE_01.pdf

Table 1

Detection Range 40 mm 60 mm 80 mm
Light Spot Diameter 3 mm 5 mm 7 mm
Switching Hysteresis < 2 mm < 3 mm < 8 mm

Connection Diagram

Switching Distance Deviation

Typical characteristic curve based on white, 90 % remission
Sr = Switching Distance
dSr = Switching Distance Change
black 6 % remission
grey 18 % remission

Ctrl. Panel

05 = Switching Distance Adjuster
31 = Switching Status/Contamination-/Short Circuit Warning

Dimensioned Picture

Dimensions specified in mm (1 mm = 0.03937")
1 = Transmitter Diode 2 = Receiver Diode B_SYM_SCHLUESSEL_17.pdf Wrench Size
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