A Point of Sale That Works Without Internet
The Sahl cashier keeps selling and printing receipts during internet outages, and all transactions sync automatically when the connection returns.
Why offline operation matters
Internet outages can happen at any time, and the customer standing at the register won't wait for the connection to come back. A system that stops with the network means queues and lost sales. That's why the Sahl cashier is designed to run fully on the local device.
How does Sahl work offline?
Product and price data is stored on the cashier device itself. When the connection drops, the device keeps working from this local data, and every sale is recorded locally in order.
What keeps working during an outage?
- Selling: issuing invoices, scanning barcodes and using quick products as usual.
- Printing: receipt printing on the thermal printer happens locally and is not affected by the network.
What happens when the connection returns?
As soon as the internet is back, the cashier uploads all locally recorded transactions to the cloud automatically — no manual step needed. Once syncing completes, the sales appear in your reports and inventory quantities are updated as if the outage never happened.
Frequently asked questions
Does selling continue when the internet goes down?
Yes. The cashier screen keeps all selling functions working locally, including barcodes and quick products.
Does receipt printing work without internet?
Yes. Thermal printing happens locally between the cashier and the printer and needs no internet connection.
How does syncing work when the connection returns?
Fully automatically: the cashier uploads the locally recorded transactions to the cloud as soon as the internet is back, so they appear in reports and inventory updates.