Feature: 1. Wide Application: Extensively used in ROV ships, underwater propellers, manned ships, etc., to better meet your needs. 2. Material: The shell is made of CNC 6061 aviation aluminum alloy with anodized surface treatment, more corrosion resistant. 3. Long Last: High quality electronic components improve the current capacity of the ESC. With water cooling, it can work longer. 4. Multiple Programming Methods: Support LCD programming card or USBLINK with PC software. 5. High Performance: Easy to program the ESC or update the firmware online, and you can also use the remote control to modify the parameters. Specification: Item Type: Electronic Speed Controller Shell Material: Aluminum Alloy Wire Material: 8AWG extra soft silicone wire Colour: Black Size: Approx. 110x69x32mm/4.3x2.7x1.3in (excluding cables and water nozzles) Water Nozzle Outer diameter: Approx. 4.9mm/0.19in (approx. 3x5mm/0.1-0.2in silicone tube is recommended nut not included) Water Nozzle Length: Approx. 10mm/0.4in Pulse Width: 1000 milliseconds-2000 milliseconds (1500 milliseconds is the median; programmable) Peak Current: 200A Applicable Voltage: 16-48V (5-12S) Application: For ROV ship, underwater propeller, manned ship, etc.. Package List: 1 x Electronic Speed Controller1 x Manual Note: This ESC is specially developed for underwater propellers and is compatible with low‑speed motors. The ESC does not have a 5V voltage output. It needs to be used to supply power to the receiver.