Product Model
WTB4SP-1GE11220ZZZ

Selling Points
- 1Detects objects as small as 0.2 mm at a distance of 180 mm.
- 2Reduces false triggers with adjustable switching threshold.
- 3Ensures precise detection with a focused light beam.
- 4Measures 12.1 mm x 41.9 mm x 18.6 mm, suitable for space-constrained applications.
- 5Operates in temperatures from -40°C to +60°C with IP66/67 protection.
Technical Specifications
Detailed engineering parameters based on manufacturer documentation
Parameter | Value | Parameter | Value |
---|---|---|---|
Functional principle | Photoelectric proximity sensor | Functional principle detail | Background suppression, NarrowBeam |
Sensing range_Sensing range min. | 4 mm | Sensing range_Sensing range max. | 130 mm |
Sensing range_Adjustable switching threshold for background suppression | 10 mm ... 130 mm | Sensing range_Reference object | Object with 90% remission factor (complies with standard white according to DIN 5033) |
Sensing range_Minimum distance between set sensing range and background (black 6% / white 90%) | 0.5 mm, At 70 mm distance | Sensing range_Recommended sensing range for the best performance | 20 mm ... 90 mm |
Emitted beam_Light source | PinPoint LED | Emitted beam_Type of light | Visible red light |
Emitted beam_Shape of light spot | Point-shaped | Emitted beam_Light spot size (distance) | 1.8 mm (70 mm) |
Emitted beam_Maximum dispersion of the emitted beam around the standardized transmission axis (squint angle) | < +/- 1.5° (at Ta = +23 °C) | Focus position | 70 mm |
Key LED figures_Normative reference | EN 62471:2008-09 | IEC 62471:2006, modified | Key LED figures_LED risk group marking | Free group |
Key LED figures_Wave length | 635 nm | Key LED figures_Average service life | 100,000 h at Ta= +25 °C |
Smallest detectable object (MDO) typ. | 0.1 mm (At 70 mm distance) | Smallest detectable object (MDO) typ. | Object with 90% remission factor (complies with standard white according to DIN 5033) |
Adjustment_Teach-Turn adjustment | BluePilot: For setting the sensing range | Indication_LED blue | BluePilot: sensing range indicator |
Indication_LED green | Operating indicatorStatic on: power on | Indication_LED yellow | Status of received light beamStatic on: object presentStatic off: object not present |
Special applications | Detecting uneven, shiny objects, Detection of poorly remitting and tilted objects | Supply voltage UB | 10 V DC ... 30 V DC |
Ripple | ≤ 5 V | Usage category | DC-12 (According to EN 60947-5-2)#!#DC-13 (According to EN 60947-5-2) |
Current consumption | ≤ 20 mA, without load. At U#!#= 24 V | Protection class | III |
Digital output_Number | 1 | Digital output_Type | NPN |
Digital output_Switching mode | Light switching | Digital output_Signal voltage NPN HIGH/LOW | Approx. UB/ < 2.5 V |
Digital output_Output current Imax. | ≤ 100 mA | Digital output_Circuit protection outputs | Reverse polarity protected |
Digital output | Overcurrent protected | Digital output | Short-circuit protected |
Digital output_Response time | ≤ 500 µs | Digital output_Repeatability (response time) | 150 µs |
Digital output_Switching frequency | 1,000 Hz | Pin/Wire assignment_Function of pin 4/black (BK) | Digital output, light switching, object present → output Q LOW |
Housing | Rectangular | Design detail | Slim |
Dimensions (W x H x D) | 12.1 mm x 41.9 mm x 18.6 mm | Connection | Cable, 3-wire, 2 m |
Connection detail_Deep-freeze property | Do not bend below 0 °C | Connection detail_Conductor size | 0.14 mm² |
Connection detail_Cable diameter | Ø 3.4 mm | Connection detail_Length of cable (L) | 2 m |
Material_Housing | Plastic, VISTAL® | Material_Front screen | Plastic, PMMA |
Material_Cable | Plastic, PVC | Maximum tightening torque of the fixing screws | 0.4 Nm |
Specifications may be subject to change without notice