Overview

I wanted the ability to turn on my inverter when not in the camper, so I added a RF Relay.

Wired switch schematic

RF Relay

I went with a keychain RF switch that has both a ON and OFF button.

QIACHIP Mini Wireless Remote Control Switch DC 6V 12V 24V 1 Channel RF Relay Latched Switch for LED Light, Car Battery ON/Off

To set this relay in latched mode, click the learning button 3 times and then push the ON button followed by the OFF button. After that, you should be good to go.

Wiring

One side of the rocker switch has the battery's voltage on it so I used that as my power source for the relay.

References