SICK – VL18‑4P3940 – V18 Series M18 Retro‑Reflective Photoelectric Sensor

The SICK VL18‑4P3940 (part no. 6013659) is a compact, industrial-grade retro‑reflective sensor from the V18 family. Featuring a 4‑pin M12 connector and selectable light/dark PNP output, it delivers a broad detection range of 0.05 m to 3 m (up to 3.7 m with C110A reflector). Ideal for reliable object detection in automation, material handling, packaging, and factory environments.

Key Features & Specifications:

• Model / MPN: VL18‑4P3940 / 6013659  

• Detection Mode: Retro‑reflective, dual‑lens with polarization filter

• Sensing Range: 0.05 m to 3 m typical; up to 3.7 m maximum (with reflector C110A)  

• Light Source: Visible red LED (650 nm), average lifespan 100,000 h

• Housing: Cylindrical M18 × 1 thread, plastic, 75 mm long; 18 × 18 × 75 mm dimensions; weight ~100 g  

• Power Supply: 10–30 V DC, ±10% ripple, ≤ 30 mA consumption  

• Output: PNP, selectable light/dark switching (via cable), up to 100 mA  

• Switching Performance: ≤ 2 ms response time; switching frequency up to 250 Hz  

• Connection: 4‑pin male M12 connector  

• Protection: Reverse-polarity, interference suppression, overcurrent/short-circuit protected; IP67 rated  

• Environmental: –25 °C to +70 °C operating; plastic housing, IP67