Event: Better error message for USB powered devices

include/icsneo/device/tree/radmoonduo/radmoonduo.h

@@ -47,6 +47,8 @@ protected:
 
 	// The supported TX networks are the same as the supported RX networks for this device
 	void setupSupportedTXNetworks(std::vector<Network>& txNetworks) override { setupSupportedRXNetworks(txNetworks); }
+
+	bool requiresVehiclePower() const override { return false; }
 };
 
 }