Castle S1F4 Pro
Smart Terminal
The Castle S1F4 Pro is the next generation of mobile POS technology, built on Android 13 and powered by an octa-core 2.4GHz processor.
With its 6.7-inch HD+ touchscreen, integrated high-speed printer, and all-day battery, this terminal is designed to keep up with modern businesses that demand both power and portability.
Paired with RapidCents POS, the S1F4 Pro turns every transaction into a smarter, faster, and more secure experience, whether you’re taking payments at the counter, at the table, or on the go.
Ideal for Restaurants, Retail, and More
The Castle S1F4 Pro Smart Terminal fits seamlessly into any setup, from restaurants and retail stores to food trucks and field teams. Fast, secure, and portable, it keeps payments effortless wherever you work.
- Restaurants and cafés
- Grocery stores and convenience shops
- Retail and shopping centres
- Food trucks and mobile vendors
- Quick-service counters
- Hospitality and event venues
- Delivery and field service teams
- Pop-up shops and seasonal markets
Freedom to Take Payments Anywhere
The S1F4 Pro gives your business complete mobility with 4G LTE, Wi-Fi (2.4GHz/5GHz), and Bluetooth 5.0 connectivity. From a store floor to a delivery route, you can accept payments wherever your customers are, without compromising speed or reliability.
All-in-One Acceptance for Every Customer
Make checkout effortless for your customers. The S1F4 Pro accepts EMV chip, tap (NFC/contactless), and magnetic stripe payments, and supports digital wallets through built-in NFC.
Whether your customers use cards or mobile pay, every transaction is seamless and secure.
Scan, Capture, and Verify Instantly
The S1F4 Pro comes with a 2MP front camera and a 5MP or optional 13MP rear camera for fast barcode and QR scanning. Perfect for mobile payments, loyalty programs, or inventory management, it eliminates the need for separate scanners while keeping your workflow simple.
Fast, Intuitive, and Built for Performance
Powered by Android 13 and a 2.4GHz octa-core processor, the S1F4 Pro delivers a smooth, app-based experience with blazing speed and minimal lag.
Its built-in 58mm thermal printer (100mm/s) and 3350mAh Li-ion battery ensure consistent performance throughout long business hours, no downtime, no interruptions.
Castle S1F4 Pro Product Overview
The Castle S1F4 Pro combines advanced hardware and secure payment technology in one elegant, handheld design.
With support for GPS, GLONASS, BEIDOU, and GALILEO positioning, plus PCI PTS 6.x certification, it’s ideal for merchants who value both security and mobility.
Integrated with RapidCents POS, the S1F4 Pro becomes a unified solution for payments, analytics, and real-time business management.
Castle S1F4 Pro Technical Specifications
Feature | Details |
Operating System | Secure Android 13 |
Processor | A73 Octa-Core 2.4GHz + Secure Processor |
Memory | 4GB RAM 32GB Flash MicroSD Socket |
Display | 6.7” HD+ (1600×720) Multi-Touch Screen |
Connectivity | 4G LTE, 3G, GPRS Wi-Fi 802.11 a/b/g/n/ac (2.4G & 5G) Bluetooth 5.0 |
Printer | 58mm Thermal Printer, 100mm/s |
Card Readers | EMV (chip), NFC/contactless, Magnetic Stripe |
Cameras/Scanner | 2MP front camera 5MP rear camera or (13MP option) Barcode Scanner (option) |
Ports | USB-C 2.0 OTG |
SIM & SAM Slots | 2 SIM or 1 SIM + eSIM (option) 2 SAM |
Dimensions | 192 × 81 × 54 mm |
Weight | 436 g |
Security | PCI PTS 6.x Certified |
Why Choose RapidCents POS
At RapidCents, we build payment solutions that scale with your business.
When you pair the Castle S1F4 Pro with our POS platform, you unlock:
- Next-day funding to accelerate cash flow
- Unified analytics across in-store and online channels
- Bank-grade security and PCI-compliant processing
- Dedicated merchant support from our in-house team
With RapidCents, payments become effortless, so you can focus on growth, not complexity.
Upgrade to the Castle S1F4 Pro with RapidCents POS and experience the power of a portable, secure, and performance-driven payment terminal.
To learn more about choosing the right POS setup for your business, read our POS System Guide