Sick WTB26P-24162120A00 Photoelectric Sensor
The Sick WTB26P-24162120A00 photoelectric sensor delivers background suppression with 30–900 mm sensing range and PNP/NPN outputs for industrial automation. This Sick Photoelectric Sensor from the W26 and W16 series uses PinPoint LED visible red light at 635 nm, supports 10–30 V DC supply, provides 1,000 Hz switching frequency, and features IP66/IP67/IP69 enclosure with IO-Link adjustment.
| Brand | Sick |
| Product Type | Photoelectric Sensor |
| Model Number | WTB26P-24162120A00 |
Sick WTB26P-24162120A00 Photoelectric Sensor – Technical Specifications
| Specification | Value |
|---|---|
| Functional principle | Photoelectric proximity sensor |
| Functional principle detail | Background suppression |
| Sensing range min. | 30 mm |
| Sensing range max. | 900 mm |
| Light source | PinPoint LED |
| Type of light | Visible red light |
| Shape of light spot | Point-shaped |
| Light spot size (distance) | Ø 7 mm (700 mm) |
| Wave length | 635 nm |
| Adjustment | IO-Link |
| Indication | LED blue, LED green, LED yellow |
| Supply voltage UB | 10 V DC ... 30 V DC 1) |
| Ripple | ≤ 5 Vpp |
| Usage category | DC-12 (According to EN 60947-5-2), DC-13 (According to EN 60947-5-2) |
| Current consumption, sender & Receiver | ≤ 30 mA, without load. At UB = 24 V2) |
| Protection class | III |
| Digital output Number | 2 (Complementary) |
| Output type | Push-pull: PNP/NPN |
| Signal voltage PNP HIGH/LOW | Approx. UB-2.5 V / 0 V |
| Signal voltage NPN HIGH/LOW | Approx. UB / < 2.5 V |
| Output current Imax. | ≤ 100 mA |
| Circuit protection outputs | Reverse polarity protected, Overcurrent and short-circuit protected |
| Response time | ≤ 500 µs 2) |
| Repeatability (response time) | 150 µs |
| Switching frequency | 1,000 Hz 3) |
| Housing | Rectangular |
| Dimensions (W x H x D) | 24.6 mm x 82.5 mm x 53.3 mm |
| Connection | Male connector M12, 4-pin |
| Housing material | Plastic, VISTAL® |
| Front screen material | Plastic, PMMA |
| Male connector material | Plastic, VISTAL® |
| Maximum tightening torque of the fixing screws | 1.3 Nm |
| Enclosure rating | IP66 (EN 60529), IP67 (EN 60529), IP69 (EN 60529) 1) |
| Ambient operating temperature | –40 °C ... +60 °C |
| Ambient temperature, storage | –40 °C ... +75 °C |
| Weight | Approx. 80 g |
The WTB26P-24162120A00 Sick 900 mm PNP NPN Photoelectric Sensor is a photoelectric proximity sensor designed for background suppression in industrial automation environments. The WTB26P-24162120A00 Sick 900 mm PNP NPN Photoelectric Sensor offers a 30–900 mm sensing range, operates using PinPoint LED at 635 nm, and provides PNP/NPN complementary outputs. It belongs to the W26 and W16 series and supports consistent object detection in automated systems.
In industrial automation, the WTB26P-24162120A00 Sick 900 mm PNP NPN Photoelectric Sensor is commonly applied in conveyors, packaging lines, assembly stations, and material handling equipment. Background suppression enables stable detection despite reflective surfaces or variable backgrounds. Complementary outputs simplify PLC interfacing, while fast response time ensures reliable switching in dynamic production processes.
The WTB26P-24162120A00 Sick 900 mm PNP NPN Photoelectric Sensor combines IP66/IP67/IP69 protection, VISTAL® housing, and –40 °C to +60 °C operating capability for dependable industrial use. Defined sensing characteristics, protected outputs, and repeatable performance reflect Sick manufacturing standards. The WTB26P-24162120A00 is suitable for precise photoelectric sensing in demanding automation applications.

