... Pipe inspection: Robotic crawler:Model: SD-9902Brand: SLD *Components:Camera head, Crawler, Display controller, Cable Reel, Wheel, System ... It can display the data of running speed, distance, crawler internal, and camera internalpressure index, two axis Angle measurement, ... 2). Control function: forward, backward, turn left, front camera axial rotation, level rotation;Lift platform rises or falls, ...