Underwater Rotary and Linear Actuators with Drivers and Oil Compensated included in the housing. Pressure Compensated Brushless Motor/Gearbox Absolute Encoder, Driver Included in the Housing The compact design is self oil compensated to depths up to 3,000 msw depth and suitable for a wide range of tasks—standard stroke 150 mm with 35 mm/sec at 500N Power (24V DC, 3 A) and a PC with a COM port is all you need. The DC Brushless Actuator includes inside the housing all the necessary circuitry (logic and driver) for controlling the motor using standard RS422 serial communication. The absolute encoder provides a 14 bits counter on single turn (16,383 counts per turn), and an additional 16 bits turns counter. Two virtual (software) switches are available for limiting the actuator travel distance between user configurable limits. Underwater Tank Cleaning Robot - a remote operated system built to clean Municipal and Industrial Water Tanks. WTC250 creates a safe working environment, provides faster cleaning process AND keeping the water tank online during cleaning. Modular design allows cleaning attachments and sensors to be easily added or removed. WTC250 operates with 230VAC, 250 ft Kevlar reinforced umbilical, 5HP water pump, 2x HD cameras and lights. Video is recorded; control is intuitive and simple to operate, laptop provided. Visit https://www.mechanicsdesign.com or call 1-604-250-3375 for more information.