bayite DC 6.5-100V 0-100A LCD Display Digital Current Voltage Power Energy Meter Multimeter Ammeter Voltmeter with 100A Current Shunt to remotely power on and off the inverter. [See my review on this product to see how it is used in this application]
https://www.amazon.com/AIMS-Power-Continuous-Temperature-Indicator/dp/B003TU6MDM