Common questions.

Our checkout currently ships to UK addresses only — we're based in London and dispatch within a couple of working days.

If you're outside the UK and want our gear, email [email protected] — we can often arrange a courier consignment, especially for trade or EU orders.

In-stock items ship in 2–4 working days from London. Pre-order items have a ship-date shown on the product page:

masterETH — mid Q3 2026 · cueServer + cueDesk — Q2 2026 · quadETH — early Q1 2027.

The Coming soon section on the homepage tracks the current schedule.

At checkout, in full. We use the funds to bring the production batch in.

You can request a full refund at any point before the unit ships — just reply to your order email or use the "Request return / refund" button on your order page.

Go to /account/ and enter the email you used at checkout. We'll email you a secure link (valid 7 days) that lists every order on that address. Each entry deep-links to the receipt and tracking.

Yes — 12 months from delivery on every product. Full terms are in our returns policy. If something has died on you within the warranty period, get in touch and we'll arrange a fix or replacement.

Yes — every order's confirmation email has an itemised PDF receipt attached, with line items, totals, our company number, and our VAT number. expanseElectronics® Ltd is VAT-registered as GB443246507; UK orders receive a VAT invoice with the VAT element broken out, and non-UK orders are zero-rated as exports.

If your accounts department needs a specific format (different layout, supplier reference, a PO number on the line items), email support and we'll generate one.

Anything that speaks Art-Net or sACN (E1.31) — that includes ChamSys MagicQ, ETC Eos, Hog 4, Avolites Titan, grandMA3, ENTTEC EMU / E.M.U Pro, OLA, QLab, MA on PC, and most software-defined lighting consoles.

The device appears on the network and accepts unicast or broadcast on the relevant UDP ports.

Yes. Both protocols are listened for simultaneously on each port. You don't need to pick one — the firmware merges by priority where they overlap. See Art-Net vs sACN on the wiki for the comparison.

The dualETH and quadETH are nodes — they turn Art-Net/sACN into DMX or pixel output, with two or four ports respectively.

The masterETH is a fleet manager — it doesn't drive lights itself but it gives you a single web UI to discover, configure, monitor, and back up every node on your network.

See the side-by-side comparison for the full breakdown.

Yes — go to /updater/ in a Chromium-based browser (Chrome, Edge, Brave, Opera, Arc). Plug the device into USB-C, click Connect, pick the port, and flash.

All four ESP-based products (dualETH, masterETH, cueServer, cueDesk) are supported. Safari and Firefox can download the .bin but can't flash directly because they don't ship Web Serial.

The firmware updater wiki page walks through the flow in more detail.

Yes — 30% off for schools, students, and educators. Fill in the short form at /edu/discount-request/ from your institutional email. We typically approve within one working day and email you a single-use discount code.

The educational discount wiki page has the full details on who qualifies.

Yes — from /support/ you can chip in £5/month or make a one-off contribution. Monthly supporters get 5% off every order, £1.50 store credit each month (auto-applied at checkout), a 20% off code at 3 months, and a free t-shirt at 6 months.

You manage, change the card, or cancel any time from the Support tab of your account. Full details are on the Supporting us wiki page.

Yes — email [email protected] with the quantities you need and the destination. We can offer trade pricing on orders above a small minimum, and we can ship on a per-PO basis for institutional buyers.