... memory, envelope echo, freezing waveform, scanning workpiece B motion.Alarm the wave’s afferent echo and efferent echo, ... , can work 8 hours continuously. Low voltage alarm and automatic shutdown protection system.Small volume,large sight ... , width and height) continuous adjustable, sound-light alarm.Bandwidth0.5-15.0MHzDAC and AVG curveAt any point ... .28 Kg (contain batteries) Ultrasonic flaw detector