Here is a smart kit that connects your boat engine to your phone or tablet. The Mercury VesselView Mobile helps you keep track of your fuel consumption, engine temperature, RPM, and other important data points. You can connect up to 4 engines to your smart device. VesselView Mobile tracks your engine’s running hours, so you know ahead of time when to perform maintenance.
The VesselView Mobile app lets you customize up to 3 screens to fit your needs. You can connect the device to any Mercury SmartCraft-capable engine in a couple of minutes.[where to get it]