The Hesai OT128 is a 128-channel, 360° mechanical long-range LiDAR engineered for automotive-grade perception. Even under 100 klux of strong ambient light it ranges 200 m at 10% reflectivity (230 m maximum) with ±3 cm typical ranging accuracy, sweeping a 40° vertical field of view (−25° to +15°) at a finest 0.125° vertical resolution — so a single sensor covers a vehicle's entire field of view without stitching or multi-sensor calibration.

With selectable 10/20 Hz frame rates, up to 6.91 million points per second in dual return, and finest 0.1° horizontal resolution, the OT128 delivers high-definition point clouds while Hesai's Intelligent Point Cloud Engine (IPE) flags rain, fog, exhaust fumes and water splashes in the data. Rated IP6K7 & IP6K9K with a 905 nm Class 1 eye-safe laser, 9–32 V DC input, automotive 1000BASE-T1 Ethernet, and an ISO 26262 / ISO 21434-compliant development process, it is built for autonomous-driving development and validation, robotaxi and robotruck R&D, service robotics, warehousing and logistics, and stationary roadside ITS perception.