Blue Sea Systems M-Series Mini on-Off Battery Switch with Knob Red Electrical It has a simple but

It has a simple but effective design

extremely durable and has a long service life

even when internet or cell phone service isn’t available

and the lamp automatically shuts down after two hours to prevent accidental battery drain

Easily swallows an entire block of chalk and taped hands

Blue Sea Systems M-Series Mini on-Off Battery Switch with Knob Red Electrical It has a simple but300 Ampere continuous rating for outboards and small gasoline or diesel engines. 1 piece tin plated copper stud design never loosens over time. Terminal studs accept 3 8 in. or M10 ring terminals. Features isolation cover with 3 removable sides. Ignition protected and UL Listed. Rated for 300 Amp continuous, 500 intermittent, 1500 cranking. 2 7 8 in. x 2 7 8 in. Selector 3 Position Switches isolated battery banks to all loads. Selector 4 Position