Stackably runs on Sunmi payment terminals. This guide covers each device in the lineup and what it's best suited for, so you can pick the right hardware for your business. Every device below is live and available today.

For the full detail on each device, plus printers, scanners, cash drawers and the network requirement, see Stackably hardware guide: choosing the right Sunmi devices for your business.

The P3H is the smaller, portable option: a handheld terminal with a 6.75-inch HD touchscreen and a built-in receipt printer (58mm paper) that connects over Wi-Fi or with an LTE SIM card, so it works away from the counter — in the queue, at an event, or on the go. Choose the P3H when you want simple, mobile payment acceptance and don't need a large screen.

The P3 MIX has a 10.1-inch HD touchscreen, a built-in receipt printer (80mm paper), supports a cash drawer, connects over Wi-Fi or an LTE SIM card, and can pair with a 6.7-inch customer-facing display so your customer can follow the order and complete prompts on their own screen. Choose the P3 MIX when you want one device that works at the counter and can also be carried around the business.

The Sunmi T3 is available now. It has a 15.6-inch full-HD merchant-facing main screen on an elevated stand and a built-in 80mm receipt printer with auto-cutter. It pairs with one of two customer-facing setups: the CPad Pay, an 11-inch customer-facing payment display that slides into a slot on the back of the T3, or a 10.1-inch customer display with a separate P2 SmartPad card reader that can sit wherever the customer reaches.

To be clear about the two screens: the 15.6-inch display is the main screen the merchant uses to run checkout, and the customer-facing screen is the separate, smaller screen for viewing the order and completing payment. The T3 cannot take payment by itself, so it always comes with one of the two customer-facing setups.

Choose the T3 for bar stations, restaurant counters and larger retail checkouts with a big menu or product catalog. Because its receipt printer is built in, a T3 on its own needs no separate printer and no Stackably network.

The Sunmi D3 Pro is available now. It is a desktop station with a 15.6-inch full-HD touchscreen and an aluminum body. It has no built-in printer, so it is paired with a separate printer: a Sunmi 80mm network printer or a label printer plugged in by USB beside it (no Stackably network needed), or a network printer placed elsewhere on the Stackably network.

Like the T3, every D3 Pro comes with either the 11-inch CPad Pay or the 10.1-inch customer display with a P2 SmartPad, in the D3 version.

Largest screen: the T3 and the D3 Pro, each with a 15.6-inch merchant-facing touchscreen. Both come with an 11-inch CPad Pay or a 10.1-inch customer display facing the customer.

Largest carry-around screen: the P3 MIX, with a 10.1-inch touchscreen and an optional 6.7-inch customer-facing display.

If you need portability: the P3H handheld (6.75-inch screen) trades screen size for mobility.

You can also take card payments directly on an iPhone or Android with the Stackably Admin app — including a Scan card option today and Tap to Pay on phone coming in early 2027. See Taking card payments on your iPhone or Android with Stackably — today and what's coming.