This system is available for use with either Diver or ROV operation. Diver System: 0.5 Mhz Subsea Transducer 200Metre Umbilical Ultrasonic Electronics Rugged Lap top Computer RSL FMD Software Ultrasonic Output RS232 Range 0.5mtr to 10mtr Power 110/240volts ROV System: 0.5 Mhz Subsea Transducer Subsea Electronic Pod Dimensions 200 x 75mm Rugged Lap top Computer RSL FMD Software Power to Subsea Electronics 24vDC Output RS485 Range 0.5mtr to 10mtr Depth rating 4000 Meters.