Connecting a cash drawer to the printer
A cash drawer isn't connected to the POS at all. It plugs into the receipt printer, and the printer pops it open when a receipt prints.
Wire it up
- Plug the drawer's cable — it looks like a telephone plug — into the socket on the printer marked DK, Drawer or Cash Drawer.
- Don't use the network socket beside it. It's the same shape and slightly wider; the drawer cable is the narrower one.
- Switch the printer off and on.
Switch it on in the app
Open Settings → Printing, find the printer's row, and turn on Auto-open cash drawer. The drawer then opens each time that printer prints a receipt.
When it doesn't open
- Check the drawer's key. Many drawers have a lock on the front with a position that disables the release entirely.
- Try the printer's own test. Most printers pop the drawer during their self-test. If that doesn't open it either, the problem is the cable or the drawer, not the POS.
- Low-cost printers may not respond. Some clones only understand an older version of the open command, and some don't drive the drawer at all. The printer's manual will say whether it supports a cash drawer.
- Check the voltage. Drawers come in 12 V and 24 V versions. A 24 V drawer on a 12 V printer socket clicks but doesn't have the force to open.
- The browser's print dialog can't open a drawer. The receipt has to be routed to the thermal printer itself.
Still stuck?
Use Copy setup report and paste it into your message, with the printer and drawer models.