Hardware Layer
Edge Controller and Interactive Payment Terminals — terminal-agnostic, built for industrial reliability.
GS-SSP Edge Controller
The core control unit connecting payment terminals to on-site hardware — supporting industrial buses and direct physical device control.

Supported Buses
Physical Capabilities
- • High-voltage relay output
- • Sensor integration
- • Timing control
- • IP65-rated waterproof enclosure
Compatibility
Terminal Agnostic — compatible with the full PAX, Castles, and FEITIAN terminal lineup.
Wiring Overview
| Spec | Edge Controller |
|---|---|
| Power Supply | 12–24VDC |
| Operating Temperature | −30°C to +60°C |
| Protection | IP65 |
| Interfaces | RS485 / CAN / GPIO |
| Certification | CSA / UL |
Interactive Payment Terminals
5.0"–6.5" large-screen Android touch terminals hosting the GS-SSP application and payment processing.
PAX IM30
Outdoor unattended (primary)
Castles S1U2
Indoor / outdoor general use
FEITIAN M20
Primarily indoor (alternate)
| Spec | PAX IM30 | Castles S1U2 | FEITIAN M20 |
|---|---|---|---|
| Screen Size | 6.0" HD Touch | 5.5" Touch | 5.0" Touch |
| Operating System | Android 11+ | Android 10+ | Android 9+ |
| Protection Rating | IP65 Full Waterproof | IP54 Splash Resistant | IP52 Drip Resistant |
| Operating Temp | −30°C to +60°C | −20°C to +50°C | −10°C to +45°C |
| Payment Interfaces | EMV / NFC / QR / Mag | EMV / NFC / Mag | EMV / NFC / Mag |
| Connectivity | 4G LTE + WiFi + BT | WiFi + BT + LAN | WiFi + BT |
| Certification | EMV L3 / PCI PTS 6.x | EMV L3 / PCI PTS | EMV L2 / PCI PTS |
| Best Suited For | Outdoor Unattended (Primary) | Indoor / Outdoor | Primarily Indoor |
Extending GS-SSP to Next-Generation Unattended Retail Hardware
Industrial-grade cabinets built for extreme climates, compatible with our GPIO / MDB / RS485 control layer — representative categories we're extending GS-SSP to support.
Refrigerated & Frozen Vending Cabinets
Single- and double-door smart cabinets, 5 to 30+ compartments, gravity-sensing dispensing for food & beverage retail.
AI Vision Vending Cabinets
Camera-based product recognition for open-shelf and cooler formats — no gravity sensors required.
Gravity + AI Hybrid Cabinets
Combines gravity sensing and computer vision in one cabinet for faster, more accurate checkout.
Smart Pickup Lockers
Refrigerated compartment lockers for order pickup and parcel delivery.
Existing equipment can be retrofitted with GS-SSP control, and new-generation cabinets can ship pre-integrated. GoldSky is in active discussions with international industrial hardware manufacturers to bring these next-generation form factors to the GS-SSP platform.