Description
Specifications:
Type / part number: WTB4SP-21312120ZZZ / 1139074
Brand: SICK
Functional principle: photoelectric proximity sensor with background suppression
Sensing range: 4-250 mm; suppression threshold adjustable 10-250 mm
Recommended range for best performance: 40-170 mm
Smallest detectable object: typ. 0.2 mm at 180 mm (90 % remission)
Light source: PinPoint LED, visible red 635 nm
Output: 1 x push-pull PNP/NPN, dark switching, 100 mA max.
Switching frequency: 1,000 Hz; response time ≤ 500 µs; repeatability 150 µs
Adjustment: Teach-Turn with BluePilot sensing-range indicator
Supply voltage: 10-30 V DC; protection class III
Connection: male connector M8, 3-pin
Housing: slim VISTAL®, 12.1 x 41.9 x 18.6 mm, PMMA front screen
Enclosure rating: IP66 / IP67; temperature -40 to +60 °C
Condition: Brand New, Original
Description:
The SICK WTB4SP-21312120ZZZ detects objects against any background using active background suppression: the switching threshold is teach-adjustable from 10 to 250 mm, so a target in front of a vibrating conveyor wall or a shiny background is detected reliably without reflectors. The slim VISTAL housing fits narrow machine frames, and the Teach-Turn element with BluePilot display makes setting and verification fast.
Used for small-part detection on conveyors, position checks in assembly stations, end positions of slides and grippers, and level detection in bins where background suppression is required.

Please note that product specifications may be subject to change. For exact technical data, please refer to the official manufacturer documentation or contact our sales team.
Lead Time: Please contact us for current lead time.
Delivery: Worldwide shipping by DHL / FedEx / TNT / UPS.
Payment: T/T in advance, PayPal, Western Union.
Price: Negotiable — please contact us for a quotation.
Remark: Price and lead time on request. Light-switching and IO-Link variants of the WTB4 family available on request.
As a professional supplier of imported industrial automation spare parts, Shenzhen SilkRoad XY Technology Co., Ltd. (slxytech.com) provides original products with competitive prices and reliable delivery.
We regularly supply OMRON, SICK, BUCHER, FAIRCHILD, BARKSDALE, ORTLINGHAUS, REXROTH, ABB, ALLEN BRADLEY, BENTLY, GE, FOXBORO, HIMA, HONEYWELL, TRICONEX, OTT-JAKOB and MARPOSS. Please contact us with your inquiry — we will offer our best price.



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