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Engineered for success.

Elevating payment experiences through innovative technology, robust security and unparalleled customer engagement. 

Designed to suit your needs.

S1F4 Pro

S1F4 PRO

Android Terminal

Experience the future of payments with our premier S1F4 PRO portable device. Upgrade and accelerate your business now.

S1U2-MINI

S1U2-M4

Android Terminal

Designed for extreme durability, S1U2-M4 delivers reliable performance in the toughest unattended environments.

s1mini2

S1MINI2

Android Terminal

Experience the convenience and efficiency of the S1MINI2 and take your business to new heights.

Android Payment Terminals

Android Terminals

Our Android-based payment systems are your gateway to the future of payment points.

Linux Payment Terminals

Linux Terminals

Our Linux payment terminals provide secure and convenient transactions, making your business more efficient and reliable.

We make payments seamless, simple and secure.

Retail

Retail

The retail world is always changing. Stay up to date, create unique shopping experiences and offer secure payment options.

s1f3-restaurant-payment

Hospitality

Want to serve your customers even better? Make your businesses more efficient and, in turn, more profitable. 

Petroleum & Convenience

Petroleum & Convenience

Power up your payment solutions and drive your business forward. Increase the speed of payment acceptance wherever your business is.

Travel & Transportation

Travel & Transportation

Your customers have places to go. Help them get there with flexible payment terminals. Offer your customers quicker, easier ways to pay.

The latest about Castles Technology

What Australian Merchants Really Want:

7 Retail Trends Shaping Payment Needs Down Under There are almost 140 000 retail businesses in Australia, accounting
Europe’s EV dream

Power Up Your EV Payments Knowledge – Free Webinar

Join us on February 2nd at 5 PM to explore the future of seamless payments for EV chargers,

ETA TRANSACT 2025

April 2-4, 2025 in Las Vegas - See Castles in Booth #615!