Job Duration: 20 m cable (expandable) radius of gyration: zero radius (in situ 360 ° rotation) Exercise: Fully enclosed double belt drive traveling speed: 0-12 m / min (stepless) Camera: 520 lines industrial-grade color camera automatically horizontal 360 ° / 200 ° tilt rotation Sample: Fully enclosed miniature wiping and wiping two kinds of sampling time: 35s (can be adjusted) sports performance: Obstacle> 45mm, climbing> 40 ° Accuracy: The dust sample collection accuracy error: <5% of bacteria, microbes sample collection accuracy error: <5% of ≧ 0.3mm particulate matter filtration efficiency: 99.97% of all total sampling error rate: <3%