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WTB4-3P2100S79
Sick WTB4-3P2100S79 available at EU Automation. Get in touch today for a quick price.
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What happens next?
1. Email confirmation
You will get an email confirming that we have received your enquiry.
2. Dedicated Account Manager
One of our team will be in touch to confirm your part(s) specification and condition.
3. Your quote
You will receive a comprehensive quote tailored to your specific needs.
The SICK WTB4-3P2100S79 is a compact MultiTask photoelectric sensor designed for reliable, non-contact detection of objects, animals and people in industrial automation environments. Using background suppression technology, it helps distinguish target objects from surrounding surfaces within a recommended sensing range of 30 to 150 mm.
This model operates from a 10 to 30 V DC supply and features a PNP switching output with light-on switching behaviour. Its M8 3-pin connector, IP67/IP66-rated housing and robust ABS/PMMA construction make it suitable for installation in demanding machinery, conveyor, packaging and handling applications where accurate short-range object detection is required.
With a 7 mm light spot at 50 mm, 100 mA maximum output current and operation across -40 °C to +60 °C, the WTB4-3P2100S79 provides dependable sensing performance in a small form factor. Integrated status indication via yellow and green LEDs supports straightforward commissioning and operational checks.
This model operates from a 10 to 30 V DC supply and features a PNP switching output with light-on switching behaviour. Its M8 3-pin connector, IP67/IP66-rated housing and robust ABS/PMMA construction make it suitable for installation in demanding machinery, conveyor, packaging and handling applications where accurate short-range object detection is required.
With a 7 mm light spot at 50 mm, 100 mA maximum output current and operation across -40 °C to +60 °C, the WTB4-3P2100S79 provides dependable sensing performance in a small form factor. Integrated status indication via yellow and green LEDs supports straightforward commissioning and operational checks.
| Specification | Description |
|---|---|
| Manufacturer | SICK |
| Part Number | WTB4-3P2100S79 |
| Product Range | MultiPulse / W4-3 |
| Device Type | MultiTask photoelectric proximity sensor with background suppression |
| Detection Method | Optical, non-contact detection of objects, animals and persons |
| Recommended Sensing Range | 30 mm to 150 mm |
| Maximum Sensing Range | 30 mm to 150 mm |
| Light Spot Size | 7 mm at 50 mm distance |
| Supply Voltage | 10 V DC to 30 V DC |
| Output Type | PNP digital output |
| Switching Type | Light switching |
| Output Current | Up to 100 mA |
| Switching Frequency | 2 Hz |
| Response Time | Up to 250 ms according to operating instructions |
| Connection Type | M8, 3-pin connector |
| Pin Assignment | Pin 1: brown, L+; Pin 3: blue, M; Pin 4: black, Q |
| Status Indicators | Yellow LED for received light status; green LED for active supply voltage |
| Enclosure Rating | IP67 |
| Protection Class | Class III |
| Circuit Protection | Reverse polarity protection, interference suppression, overcurrent protection and short-circuit protected output |
| Ambient Operating Temperature | -40 °C to +60 °C |
| Housing Material | ABS plastic |
| Optics Material | PMMA plastic |
| Approximate Weight | 30 g |
| Mounting Thread | M3 |
| Maximum Tightening Torque | 0.8 Nm |
| Dimensions | Approximately 12 mm x 16 mm x 39.5 mm |
| Commodity Code | 853650 |
| Classification | UNSPSC 39121528; ETIM EC002719 |
What type of sensor is this?
It is a MultiTask photoelectric sensor from SICK’s MultiPulse range, designed for object detection using visible red light and background suppression.
How does the sensor detect objects?
The sensor works as a photoelectric diffuse-reflective sensor with background suppression. It emits a visible red PinPoint LED beam and detects light reflected back from the target object while helping to ignore objects beyond the set sensing area.
What is the sensing range?
The recommended sensing range for best performance is 30 mm to 150 mm. The maximum stated sensing range is 28 mm to 165 mm, depending on the target surface and reflectivity.
What type of output does it use?
The sensor has a PNP switching output with light-on switching behaviour. It also features an oscillating output, making it suitable for monitoring applications where a pulsed signal is required.
What supply voltage is required?
WTB4-3P2100S79 operates from a 10 V DC to 30 V DC supply. The residual ripple should remain within the specified limit of less than 5 Vss.
What connector does the sensor use?
It uses a 3-pin M8 male connector. The typical pin assignment is pin 1 brown for L+, pin 3 blue for M, and pin 4 black for the digital output.
What is the response time?
The product data sheet states a response time of less than 0.5 ms, while the operating instructions list a maximum response time of 250 ms for the monitoring variant. The applicable value should be checked against the intended operating mode.
What is the switching frequency?
The switching frequency is 2 Hz, based on a light-to-dark ratio of 1:1.
What are the housing dimensions?
The compact rectangular housing measures approximately 16 mm wide, 39.5 mm high, and 12 mm deep.
What environmental rating does the sensor have?
The sensor is rated IP67 and IP66, making it suitable for many industrial environments where protection against dust and water ingress is required.
What temperature range can it operate in?
The operating ambient temperature range is -40 °C to +60 °C. The storage temperature range is -40 °C to +75 °C.
What materials are used in the construction?
The housing is made from ABS plastic and the optical components are made from PMMA plastic.
What is the light source?
It uses a visible red PinPoint LED with a wavelength of 650 nm. The light spot size is approximately 7 mm at a distance of 50 mm.
Is it suitable for detecting small objects?
Yes. The sensor is identified for small object detection applications, helped by its compact light spot and background suppression principle.
What protection features are built in?
The sensor includes reverse polarity protection on the supply connections, interference suppression, and output protection against overcurrent and short circuits.
What accessories are commonly used with it?
Common accessories include 3-pin M8 sensor cables, straight M8 connectors, and suitable mounting brackets for W4-style SICK photoelectric sensors.
- Non-contact detection of small objects on automated production lines
- Presence sensing for parts, containers, packs and components
- Object detection on conveyors where short sensing distances are required
- Background suppression applications where nearby machine structures must be ignored
- Position checking in compact machinery and handling systems
- Detection of objects with varying surface colours within the sensor’s operating range
- Monitoring product flow in packaging, assembly and material handling equipment
- Counting items passing through a defined detection point
- Triggering control signals for sorting, indexing or transfer operations
- Use in space-restricted installations requiring a compact M8-connected photoelectric sensor
This content has been produced using multiple sources. EU Automation takes no responsibility for the accuracy of this information. Always consult the original equipment manufacturer for the most up to date instructions and information.
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Customer reviews
steve
Daniel
Excellent customer service...
Alex Bailey is my main point of contact at EU Automation...he is extremely friendly, has exceptional customer service skills and always offers great pricing & lead times.
2 months ago
Jerry Schrink
Tom Higgins provided amazing service
Tom Higgins provided great prompt service. I contacted Tom by phone and within 10 minutes there was a quote in my in box. WOW Thank you Tom and Thank you EU Automation!
2 months ago
Paulo Pereira
Excellent service and communication…
Excellent service and communication from Alex Bailey. He truly goes above and beyond to ensure his clients are 100% satisfied. The entire process was seamless, and his attention to detail made a huge difference. Highly recommended for anyone looking for amazing service!
2 months ago
Gary
Tom Higgins did a great job at getting…
Tom Higgins did a great job at getting us the part we needed. He saw a concern with the part a verified before shipping.
3 months ago
Lessle Smith
Thomas Higgins has gone above and…
Thomas Higgins has gone above and beyond to make things happen for my facility. His customer service and knowledge were an asset in helping me with my order and the logistics challenges!
4 months ago
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