Forward, backward, left and right turn movement at random, and flexible. Inspection capability: Front, rear camera can tilt 360 ° horizontal viewing angle of 180 °, rear fixed camera with a robot left, right turn to reach the full range of image display. One-way walking distance: 30 m Obstacle Function: climbing over 4 cm high obstacles and slopes of 40 °. The fastest moving speed: ≥12 m / min, in this speed range can be adjusted freely. Sampling Consistency: sample under the same conditions, the relative deviation ≤5%. Sampling precision: the amount of dust sampling and microbiological sampling error relative to the standard method of ≤10%. The amount of dust and microbial sampling area: 50 square centimeters of dust volume sampling: 0-200g / m2. Dimensions: height × width × length = 98 × 180 × 265 毫米