... provide users with a 2-16 channel. RQ-1000 multi-channel ultrasonic flaw detector RQ-1000 multi-channel ultrasonic flaw detector for metal profiles designed ... interface resources, design a variety of output interface circuit, including sound and light alarm, relay contact output, analog output like, wave ... of 50ns step♦ Power supply: AC220V ± 10%, 50Hz RQ-1000 multi-channel ultrasonic flaw detector