Maretron ACM100 Alternating Current Monitor [ACM100-01] Brand_Maretron They are optional on some

They are optional on some boats but should be as standard as power trim and tilt

Connects high amperage cables securely

Mounting Depth - 1" (25mm)

Noise Cancelling

Maretron ACM100 Alternating Current Monitor [ACM100-01] Brand_Maretron They are optional on someACM100 Alternating Current Monitor Maretron's ACM100 is a device which monitors AC power sources and outputs information about these sources onto the industry standard NMEA 2000 marine data network. The ACM100 can monitor power busses, generators, or utility power. ACM100 output information is then displayed with networked NMEA 2000 equipment such as the Maretron DSM250 dedicated display or with NMEA 2000 compatible software such as Maretron N2KView.