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WLL190T-2N432

The SICK WLL190T-2N432 is a compact standalone fiber-optic amplifier designed for both through-beam and proximity detection applications. It provides flexible sensing from near zero up to 4 m in through-beam mode or 480 mm in proximity mode. Featuring visible red LED light, a dual 4-digit display showing set and actual values, menu-controlled teach-in via button, programmable time functions, and a rugged IP66-rated housing, this high-performance fiber amplifier is ideal for industrial automation scenarios requiring precise and versatile object detection.

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Parameter Specification
Device type Fiber-optic amplifier, standalone
Sensing range (through-beam) 0 … 4 m
Sensing range (proximity) 0 … 480 mm
Light source Visible red LED, 650 nm
Dispersion angle Approx. 65°
Adjustment Menu-controlled with single teach-in button
Display Dual 4-digit display showing set value (green) and actual value (red)
Time functions Programmable: off-delay, on-delay, one-shot, delay 0–9,999 ms
Supply voltage 10 V … 24 V DC (ripple ≤ 10 %)
Current consumption Approx. 50 mA
Output type NPN switching output, selectable light-on/dark-on mode
Switching performance Response time adjustable ≤ 2 ms, ≤ 60 µs, or ≤ 250 µs; switching frequency up to 8,333 Hz
Connections 4-wire PVC cable, 2 m, conductor 0.2 mm²
Protections Reverse polarity (supply & I/O), interference suppression, overcurrent/short circuit protection
Housing ABS/PC plastic enclosure
Enclosure rating IP66 (with proper fiber cable and protective hood)
Dimensions (W×H×D) 10.5 × 34.8 × 76.5 mm
Weight Approx. 20 g
Operating temperature –25 °C … +55 °C (derated with multiple devices); storage –40 °C … +70 °C
Average service life ~100,000 hours at 25 °C