In most procurement cycles, WTB4S-3P2161 is considered with Sick Laser Sensor, Sick Gtb6 P1211 and P&F Photoelectric Sensor, giving decision-makers confidence that theyβve chosen the most dependable component.
Sick WTB4S-3P2161 Photoelectric Sensor
The Sick WTB4S-3P2161 Photoelectric Sensor offers a Rectangular design, 650 nm sensing range, PinPoint LED light source, PNP output, and β40 Β°C ... +60 Β°C connection. Manufactured by Sick under the Sick Photoelectric Sensor category, this model belongs to the WL Series.
| Brand | Sick |
| Product Type | Photoelectric Sensor |
| Model Number | WTB4S-3P2161 |
Sick WTB4S-3P2161 Photoelectric Sensor β Technical Specifications
| Specification | Value |
|---|---|
| Functional principle | Photoelectric retro-reflective sensor |
| Functional principle detail | Background suppression |
| Sensing range max. | 4 mm ... 180 mm |
| Sensing range | 10 mm ... 180 mm |
| Light source | PinPoint LED |
| Type of light | Visible red light |
| Light spot size (distance) | Γ 6.5 mm (150 mm) |
| Wave length | 650 nm |
| Adjustment | Potentiometer, 5 turns |
| Supply voltage UB | 10 V DC ... 30 V DC |
| Ripple | < 5 Vpp |
| Current consumption | 20 mA 3) |
| Protection class | III |
| Digital Output type | PNP |
| Switching mode | Light switching |
| Output current Imax. | β€ 100 mA |
| Response time | < 0.5 ms |
| Switching frequency | 1,000 Hz |
| Housing | Rectangular |
| Design detail | Slim |
| Dimensions (W x H x D) | 12.2 mm x 41.8 mm x 17.3 mm |
| Connection | Connector M8, 3-pin |
| Housing material | Plastic, ABS |
| Front screen material | Plastic, PMMA |
| Enclosure rating | IP67, IP66 |
| Ambient operating temperature | β40 Β°C ... +60 Β°C |
| Ambient temperature, storage | β40 Β°C ... +75 Β°C |
| Weight | 30 g |
The WTB4S-3P2161 Photoelectric Sensor from Sick features a high-performance retro-reflective sensing principle with background suppression, enabling precise object recognition even when nearby surfaces or machine structures could otherwise interfere. It offers a dependable sensing range of 10 mm to 180 mm (with a max capability of 4 mm to 180 mm), supported by a PinPoint LED that emits a visible red light at 650 nm. The sharply defined Γ 6.5 mm light spot at 150 mm ensures clear alignment, crucial for tasks involving small or low-contrast parts. A 5-turn potentiometer allows fine adjustment of sensing distance, giving engineers more control in dynamic production environments.
Operating on a 10β30 V DC supply with low current consumption of 20 mA, this sensor delivers fast switching through a PNP output in light switching mode. It offers a response time of less than 0.5 ms and supports a switching frequency of 1,000 Hz, which makes it well-suited for high-speed conveyor and packaging systems. The rectangular slim housing is made of durable ABS plastic, while the front optical surface is constructed from clear PMMA. Sealed to IP66 and IP67, this model resists dust, water splashes, and harsh environments. Compact at 12.2 mm x 41.8 mm x 17.3 mm and equipped with a 3-pin M8 connector, installation is quick and space-efficient, even inside crowded control panels.
The Sick WTB4S-3P2161 excels in applications such as object presence detection on short conveyor belts, part verification in automated stations, and position control in packaging and labeling machines. Its high sensitivity makes it capable of detecting thin or dark-colored items with minimal false triggers. Engineers rely on its background suppression to avoid nuisance switching near reflectors, sidewalls, or sensors installed in tight clusters. Maintenance teams appreciate the ease of setup and adjustment, while students in automation fields can use this sensor to understand the principles of reflected light and background interference rejection. With Sickβs reputation for performance and reliability, this Photoelectric Sensor is trusted by OEMs and factories worldwide to deliver fast, accurate, and consistent detection.
