Benewake TFmini Plus LIDAR Products here
Benewake TFmini Plus LIDAR Module – Robot Anti collision Application in PDF here

There are many factors to choose proper anti-falling and obstacle avoidance sensors. It should  be considered the surrounding environment, the size, shape, range, position, posture, materials and etc. Benewake LiDAR sensor specially designed for robots to avoid obstacles such as stairs, pits, and walls.

LiDAR is a non-contact, based on Time of Flight principle measurement equipment. Single beam  of light can be used to detect obstacles. Because of its high accuracy performance, it will help robots to stop and detour in time to prevent falling.