... I/O interface.Each channel has three strobes, alarm strobe, tracking strobe, self locking strobe;Complete alarm function, can meet different ... has three strobes, alarm strobe, tracking strobe, self locking strobe Marking delay split in two,delay time is 0.5~10S,step ... can be in a different color represents.SA,PA,RA,%Real-time display Big Oil and Gas Pipe or tube detection---Ultrasound ...