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The SICK WT18-3P110 is a compact background suppression photoelectric sensor from the W18-3 series, featuring infrared LED (870nm), PNP complementary output, 10–30 VDC supply, and 700 Hz switching frequency. It offers reliable non-contact detection with a range of 50–700 mm, adjustable via 4-turn potentiometer, and IP67 protection for harsh industrial environments.
| Manufacturer | SICK (西克) |
| Series | W18-3 |
| Part Number | WT18-3P110 (Order No.: 1025887) |
| Product Lifecycle | Active (In Production) |
| Detection Principle | Background Suppression (Direct Reflection) |
| Detection Range | 50 mm – 700 mm (90% reflective target) |
| Light Source | Infrared LED, 870 nm |
| Light Spot | Ø20 mm at 400 mm distance |
| Adjustment | 4-turn potentiometer |
| Supply Voltage | 10 V DC – 30 V DC |
| Current Consumption | <55 mA |
| Switching Output | PNP Complementary (Light-On/Dark-On selectable) |
| Output Current | Max. 100 mA |
| Switching Frequency | 700 Hz |
| Response Time | <0.7 ms |
| Connection | 4-wire, 2 m pre-wired PVC cable |
| Protection Rating | IP67 |
| Housing Material | ABS Plastic |
| Dimensions (W×H×D) | 17.6 mm × 75.5 mm × 33.5 mm |
| Weight | 120 g |
| Operating Temperature | -40°C to +60°C |
| Storage Temperature | -40°C to +75°C |
| Certifications | CE, cULus, CSA |
| Applications | Object detection, positioning, packaging, conveyor systems, material handling, assembly lines |
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