Maintenance teams planning replacements for WTB26I-24G11420ZZZ frequently review Sick Laser Sensor, Sick Gtb6 P4211 and P&F Photoelectric Sensor to prevent downtime, checking availability and compatibility with existing systems.
Sick WTB26I-24G11420ZZZ Photoelectric Sensor
The Sick WTB26I-24G11420ZZZ Photoelectric Sensor provides a 30 to 3,000 mm sensing range using an infrared LED with background suppression. This proximity sensor includes NPN output, Teach-Turn adjustment, 200 Hz switching frequency, and IP66, IP67, and IP69 enclosure ratings for reliable use. Explore more products from Sick Sensors, view all Sick Photoelectric Sensors at Sick Photoelectric Sensors, and access complete W26/W16 Series information at Sick W26/W16 Series.
| Brand | Sick |
| Product Type | Photoelectric Sensor |
| Model Number | WTB26I-24G11420ZZZ |
Sick WTB26I-24G11420ZZZ Photoelectric Sensor – Technical Specifications
| Specification | Value |
|---|---|
| Functional principle | Photoelectric proximity sensor |
| Functional principle detail | Background suppression |
| Sensing range min. | 30 mm |
| Sensing range max. | 3,000 mm |
| Light source | LED |
| Type of light | Infrared light |
| Shape of light spot | Point-shaped |
| Light spot size (distance) | Ø 12 mm (800 mm) |
| Wave length | 850 nm |
| Adjustment | Teach-Turn adjustment |
| 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 V |
| Protection class | III |
| Digital output Number | 2 (Complementary) |
| Output type | NPN |
| Signal voltage PNP HIGH/LOW | - |
| 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 | ≤ 2.5 ms 3) |
| Repeatability (response time) | 150 µs |
| Switching frequency | 200 Hz 4) |
| Housing | Rectangular |
| Dimensions (W x H x D) | 20 mm x 55.7 mm x 42 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 Sick WTB26I-24G11420ZZZ Photoelectric Sensor is a background suppression proximity device used across industrial automation systems. It offers a 30 to 3,000 mm sensing range, uses an infrared LED, and provides a NPN output suitable for standard control inputs. As part of the W26 and W16 Series, the model supports Teach-Turn adjustment and meets IP66, IP67, and IP69 protection requirements for stable operation in demanding environments.
This sensor is suitable for conveyors, automated material handling lines, packaging machinery, and assembly applications. Its background suppression capability ensures reliable detection even with varying surface finishes, while the 200 Hz switching frequency supports moderate-speed processes. Engineers using this model benefit from clear LED indication, a compact housing, and an M12 connector that simplifies installation and integration into machine systems.
The Sick WTB26I-24G11420ZZZ Photoelectric Sensor combines a 30 to 3,000 mm sensing range, robust VISTAL construction, and dependable NPN switching for consistent proximity detection. Sick’s engineering quality provides stable performance in environments requiring accuracy and durability, making this model suitable for industrial users seeking a reliable sensing component for their automation and control setups.

