Castles S1U2-M2D
A compact unattended module on Android 13 Go — 2.8-inch screen, IP65, with the serial and MDB ports moved out to an external hub.
- Manufacturer
- Castles
- Form factor
- Unattended
- Operating system
- Secure Android 13 Go
- Connectivity
- Ethernet, 4G LTE, 3G, GPRS, Wi-Fi 2.4 + 5GHz, Bluetooth 5.x, USB-C; MDB, RS232 and coin pulse via external hub
- Receipt printer
- None
The S1U2-M2D keeps the terminal itself down to Ethernet and USB-C and pushes the rest — USB-A, two RS232 lines, MDB, coin pulse and door switch — out to an optional external hub. For a shallow machine door that is the difference between fitting and not.
It takes chip and contactless but no magstripe, on a 2.8-inch 600-nit display, with a quad-core A53 at 2.0GHz and 2GB of RAM on Android 13 Go. A 2MP camera with an LED reads QR codes.
It is 106 x 85 x 65mm and 320g, EVA and NAMA mounting compliant, IP65 and IK09, rated -20 to +65C, PCI PTS 7.x. Input is 9 to 48V.
What it costs
The rate you pay is negotiated on your volume and card mix, not set by the terminal — two businesses on the same S1U2-M2D can be paying very different money. Find out what yours should be.
Other Castles terminals
Specifications from Castles. Checked 3 October 2026.
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