HLK-3600 Telemetry Surface Transmitter Uses a 4-20MA opto-isolated twisted pair loop or RS232 to transmit the encoded data to the subsea pod Fitted with 2-3 joystick controls which are configured to operate the valves in the Hydro-Lek valve packs Additional toggle switches are fitted to enable the pumps as well as the extra valves not actuated with the joystick controls A Power On LED and telemetry link LED are also fitted 2-3 Axis On-Off Joysticks 1 x Mom – Off – toggle switches Manipulator Pump On Off Power & Telemetry Link LEDs 24V DC Operation