Ive been looking around for a remote tach for my new build but cant seem to find a stand alone unit have only found the sensor in the nomadio radio but dont want to purchase a whole nother radio, especially since the wife is ruffled a bit by how much ive spent on it already (darn you twisted liquid) but since Im going to run some uncharted waters (so to speak) would like to know where my motor is running in the rpms when I finally paste her together. Does anyone know of a remote sensor for rpms that either has a display to mount in the boat with a readings log or an active diplay thats handheld an uses a sensor mounted in the hull???
help please

-Wayne