The SICK VL18‑52 is an M18 barrel-style retro‑reflective photoelectric sensor designed for reliable object detection using a reflector. It features a robust stainless-steel (or plastic, depending on variant) IP67 housing, red LED light source, and a PNP output with light/dark switching—ideal for industrial automation and packaging applications.

Key Features & Specifications:

• Model / Series: VL18‑52 (V18 series)

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

• Sensing Range: Typical 3 m, up to ~3.7 m depending on reflector

• Housing: M18 × 1, ~78–83 mm length, stainless-steel (V4A) or plastic option, IP67–IP69K

• Connection: 4‑pin M12 connector

• Power Supply: 10–30 V DC; consumption ~30–35 mA

• Output Type: PNP, ≤ 100 mA; selectable light/dark via cable

• Switching Performance: ≤ 1 ms response time, up to 500 Hz switching frequency

• Protection & Indicators: Reverse-polarity, short‑circuit and overload protection; yellow status LED; interference suppression

• Ambient Rating: –25 °C to +70 °C; housing options offer up to +80 °C and IP68/IP69K

• Approvals: CE, cURus, UL; stainless version often certified for washdown environments

SICK – VL18-52 – M18 Barrel Retro-Reflective Photoelectric Sensor