Your dual-battery setup needs clean isolation. Not a guess. This 200A panel mount switch gives you four positions — battery one, battery two, both, or off — with a removable key so nobody flips it while you're working. Vapor proof and ignition protected, it handles the current without drama. Panel or flush mount. Wire your first battery to B1, second to B2, output to COM. Keep positive and negative on their correct terminals. That's the whole job
| 0 | Battery 1 |
| 1 | Battery 2 |
| 2 | Both |
| 3 | Off |
| brand | JAYCAR |
| continuous_rating | 200A |
| protection | Vapor proof, ignition protected |
| mounting | Panel or flush mount |
| terminals | B1, B2, COM |
| actuator | Removable key |
