Point of sale

Sell fast, get paid easy, close out with no mistakes

A POS that works at the counter, on the street, and offline. Every sale deducts inventory and invoices instantly.

Lumon's point of sale turns any tablet, phone, or computer into a register that's ready to sell. Built for shops, restaurants, pharmacies, and service businesses that need to charge in seconds without fighting the system. Every sale is tied to your inventory, your treasury, and your electronic invoicing.

Checkout

Charge however the customer wants to pay

Cash, card, SPEI or Transfer365 transfers, and split payments on a single ticket. Change, tips, and rounding are calculated automatically. You close the register with a balanced count.

  • Accept cash, card, SPEI, and Transfer365 in a single sale
  • Split the payment across several methods without leaving checkout
  • Calculate change, tips, and rounding automatically
  • Generate the Z register close-out with a per-shift and per-cashier count
Offline

Keep selling even when the network goes down

The POS saves sales on the device when there's no connection and syncs them when the signal comes back. You never lose a sale because of the wifi. Ideal for street markets, fairs, and spots with unstable internet.

  • Record sales in offline mode and sync when you reconnect
  • Look up prices and stock from local memory
  • Stamp pending CFDI or DTE as soon as the network is back
  • Work from a tablet, phone, or touchscreen register
Receipt & invoice

From receipt to invoice with no rework

You hand over a printed or digital receipt on the spot and, if the customer asks for an invoice, you generate it from the same sale. In Mexico you stamp CFDI 4.0 with the SAT; in El Salvador you issue the DTE with Hacienda.

  • Print a thermal receipt or send it by WhatsApp and email
  • Turn any receipt into a CFDI 4.0 or DTE with one click
  • Apply the customer's CFDI use and tax regime automatically
  • Combine several receipts into one end-of-day global invoice
Inventory

Every sale deducts stock in real time

No double entry: when you charge, the product leaves inventory and the system warns you when something is about to run out. You sell by barcode, by search, or from quick buttons for your best sellers.

  • Scan with a barcode reader or your phone's camera
  • Deduct stock instantly across all your locations
  • Block the sale of out-of-stock products or require authorization
  • Handle variants by size, color, format, and weight

Everything included

Multi-location

Manage several registers and stores with independent prices and inventories from one panel.

Discounts & promos

Apply BOGO, percentages, wholesale prices, and coupons right on the ticket.

Shifts & cashiers

Each seller logs in with their own user and their close-out stays separate and traceable.

Returns

Process returns and credit notes, putting the product back into inventory.

Accounts receivable

Leave sales on credit or tab with payments and WhatsApp reminders.

Open hardware

Connect a thermal printer, cash drawer, scale, and scanner without installing weird software.

Frequently asked questions

Open your register in minutes

Start charging today with a POS that deducts inventory and invoices on its own.

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