SICK DS35-B15521 Distance Measuring Device Proximity Sensor

DS35-B15521 is a Dx35 mid‑range laser distance sensor from SICK that provides non‑contact distance measurement to natural targets from 50 mm up to 12,000 mm (12 m) at 90% remission, with 50 mm to 5,300 mm in 18% reflectivity and 50 mm to 3,100 mm for 6% remission. It delivers 100 µm resolution, repeatability of at least 0.5 mm, and typical measurement accuracy of ±10 mm, enabling precise position sensing on automation lines. Operating on 12–30 V DC with about 100 mA current draw, the unit features rugged IP65/IP67 protection for harsh environments. Output options include NPN, PNP, or Push‑Pull configurations, with programmable output times from 2 ms to 64 ms and a flexible response time from 4.5 ms to 192.5 ms depending on speed setting, plus switching frequencies up to 166 Hz. The device uses a visible red laser at 658 nm (class 1) with a maximum output of 250 mW and a short pulse duration of 4 ns, yielding a typical light spot of 15 × 15 mm at 2 m. This Time‑of‑Flight distance sensor is well suited for inline distance sensing and presence/detection tasks on conveyor lines, packaging, and other manufacturing environments where reliable, non‑contact measurement is required.