Citizen CT-S851 III, Bluetooth, USB, Black

The Citizen SpeedServe POS Printer (Citizen CT-S851III family) is a high-performance direct thermal receipt printer designed for retail and hospitality environments that demand fast, reliable point-of-sale printing. Optimized for counter and kiosk deployment, this compact desktop printer supports a wide range of connectivity options to integrate easily with existing POS systems and mobile devices, and offers front-exit paper handling and drop-in loading to simplify operation. With a long-life thermal printhead, self-retracting auto cutter options, ENERGY STAR efficiency and features such as a backlit LCD and built-in buzzer, the CT-S851III series delivers dependable throughput and low maintenance for busy service locations.

Key Features

• High-speed printing: Up to 500 mm/s maximum print speed to keep queues moving during peak service periods.
• Flexible connectivity: Multiple interface options across the family — USB, Ethernet, Wi‑Fi, Bluetooth, RS-232 and Parallel — for easy integration with POS and mobile systems.
• Direct thermal reliability: Long-life thermal printhead and direct thermal print method minimize consumables handling and maintenance.
• Effortless media handling: Drop-in paper loading, front paper exit and support for common roll sizes reduce downtime and speed paper changes.
• Operational convenience: Features such as a 2-color/backlit LCD, built-in buzzer, soft-close cover and selectable full or partial auto cutter improve usability and workstation safety.

Specifications

• Product family: CT-S851
• Print width: 3 in
• Maximum printing speed: 500 mm/s
• Print method: Direct thermal
• Cutter type: Full or partial auto cutter (self-retracting snap-in)
• Supported paper widths: 58, 60, 80, 82.5 mm
• Compatible roll diameter: 82.5 mm
• Power supply: Integrated power supply
• Thermal printhead: Long-life thermal printhead
• Paper loading: Drop-in / easy paper loading
• Paper exit: Front exit
• Display: Backlit / 2-color customizable backlit LCD (model dependent)
• Built-in buzzer: Yes
• Mobile POS ready: Yes
• Cash drawer connection: Yes (model dependent)
• Splash-proof / spill-proof design: Yes (model dependent)
• Soft-close cover: Yes (model dependent)
• Weight: 6 lb
• Maximum paper thickness: 0.150 mm
• ENERGY STAR certified: Yes
• Available connectivity: USB, Ethernet, Wi‑Fi, Bluetooth, RS-232, Parallel (model dependent)