EGIS MOBILE ELECTRIC XD NMEA 2000 Single - (Relay), with Knob - 4P DT NMEA 2000 controllable, while also responding to optional discrete remote controls. Reports switch status, status of manual override knobs, and battery voltage on input terminals to the NMEA 2000 network Optional manual override knobs provide ability to lock switches ON or OFF for servicing or if control power is lost. Perfect for engine installations with Dual Start/Engine Isolation Inputs. Also has remote ON/OFF/Auto Input Allows Forced Close or Open or Allowing Automatic Operation based on Voltage and even includes local and Remote LED Indicators! Eliminates Dead Start Batteries by sharing charging on either of two batteries and isolating batteries when no charge sources are present. Supports Single/Multiple Engine Installations with Dual Start/Engine Isolation Inputs. Remote ON/OFF Input Allows Combining Batteries During Hard Start Events or Forcing Isolation of Batteries During Engine Starts.