Fortress Power Envy 4G Dongle, Cellular Monitoring Module for Envy 8kW, 10kW, and 12kW Inverters, Remote Monitoring via Fortress Power App

The Fortress Power Envy 4G Dongle is a cellular monitoring module that enables remote monitoring for Fortress Power Envy hybrid inverters over a 4G cellular network. It is compatible with the Envy 8kW, Envy 10kW, and Envy 12kW models. Unlike the WLAN (Wi-Fi) dongle, the 4G dongle does not require a home Wi-Fi network or internet router to function. It connects to the Fortress Power monitoring platform directly through the cellular network, making it the right choice for off-grid installations, remote properties, cabins, and any location where reliable Wi-Fi is not available.

How It Works

The 4G dongle plugs directly into the Envy inverter. Once connected, it establishes a cellular data connection to the Fortress Power monitoring server without needing any local network configuration. This eliminates the Wi-Fi setup steps required by the WLAN dongle and makes the installation process faster for sites without existing internet infrastructure.

Monitoring and Access

Once the dongle is online, it transmits inverter data to the same Fortress Power monitoring platform used by the WLAN dongle. Homeowners and installers can log into the Envy Fortress Power app (available on iOS and Android) or the web portal at envy.fortresspower.io to view real-time power flow, solar production, battery SOC (State of Charge), grid export, and consumption data. Installers can register the system under their customer code for fleet-wide visibility across all of their deployed systems.

Registration follows the same process as the WLAN dongle: the dongle's serial number and PIN (printed on the side of the dongle and on the packaging) are entered in the web portal or app to associate it with a station and end-user account.

When to Choose 4G Over WLAN

The WLAN dongle is the standard monitoring option for homes and businesses with a stable Wi-Fi network. The 4G dongle is designed for situations where Wi-Fi is unreliable or does not exist. Common use cases include off-grid cabins, agricultural buildings, construction sites, remote homes without broadband internet, and any installation where running ethernet or maintaining a Wi-Fi router is impractical.

Important Notes

The 4G dongle is a monitoring accessory. The Envy inverter operates fully without it. Removing or disconnecting the dongle does not affect the inverter's ability to charge batteries, power loads, or manage power sources.

One dongle is required per inverter. In parallel installations with multiple Envy units, each inverter needs its own dongle for full system visibility through the monitoring platform.