The Oceantools DigiCP® combines traditional Cathodic Potential (CP) with digital electronics. Using an Ag/AgCl half-cell Contact Probe for taking contact CP readings and transmitting the data to the surface via RS232 with the ROV telemetry. On the surface the data can be routed to any serial device, such as a video overlay unit. The DigiCP 1K has a depth rating of 1,000msw. The electronics bottle is just 75mm diameter by 100mm.