Fox ESS · 4G monitoring dongle · web interface
Fox ESS 4G-2 monitoring dongle
Fox ESS's 4G-2 dongle is the web interface for sites where fixed internet is not an option, putting the inverter online over the mobile network. Specify it for new builds awaiting a connection, outbuildings, barns and field-mounted arrays.
Delivery in 3–5 working days (estimate). The dispatch clock starts at cleared payment.
Description
Relying on a householder's WiFi is the weak point of most monitoring setups; passwords change, routers get replaced, and the callback lands on your desk. A mobile-network dongle takes the customer's network out of the equation entirely, and is worth fitting wherever signal allows. For a trade buyer the sums are simple: one part number covers the awkward sites that a WiFi stick cannot, and it ships at the same ex-VAT price whether you order a single unit or a boxful.
Specification
| Brand | Fox ESS |
|---|---|
| Part number | FE-4G-2-DONGLE |
| Phase | Single-phase |
| Condition | New |
| Category | Parts & accessories · Web Interfaces |
| Delivery method | Parcel courier |
What it pairs with
Fit it to Fox ESS inverters across the range: the H1 Gen 2 single-phase hybrids, the F series (G3) PV inverters, or the three-phase T series units also listed here. Which dongle suits which inverter generation depends on the model and firmware revision, so check the current Fox ESS pairing list before ordering for a specific unit.
It is a communications accessory only and adds nothing to generation or storage. It also depends on mobile network coverage at the inverter's location, so check signal before you specify it. For anything this page can't settle, ask the trade desk before ordering or consult a competent installer.
Often bought alongside
Last updated 2026-07-19