Perko Heavy Duty Battery Selector Switch w/Alternator Field Disconnect [8603DP] Boat Outfitting Standard Trim Tab blades are

Standard Trim Tab blades are 12 Gauge - 304 SS with a 5/8" flared trailing edge and 1/8" diameter hinge pin

High and low voltage audio and visual alarms

Tough Reinforced Plastic Housing

so you can hard wire your GPS directly to a DC power source or other electronic device

Perko Heavy Duty Battery Selector Switch w/Alternator Field Disconnect [8603DP] Boat Outfitting Standard Trim Tab blades areDiameter: 5 1 4" Depth: 2 5 8" Polycarbonate Body with Brass Terminals Ignition Protected For use with 6 to 32 Volt Marine Electrical Systems Capacity 250 AMPS Continuous, 360 AMPS 5 Mins. Intermittent Terminal Stud Size: 5 16" When used with Non Unitized Alternators, these models will interrupt the field current (reducing the possibility of damage) if turned "OFF" with the engine running. Specifications: AFD: Yes Lockable: No Positions: 2 Continuous