All inverters I have seen have a switch on one end or the other. If there is a remote switch, usually there will be a telephone cord connected between the inverter and the switch.
Regards, Don My ride is a 28 foot Class C, 256 watts solar, 556 amp-hours of Telcom jars, 3000 watt Magnum hybrid inverter, Sola Basic Autoformer, Microair Easy Start.