Description
The Citizen CL-S521 is a high-performance industrial direct thermal label printer designed for durability, speed, and seamless integration into demanding environments such as manufacturing, logistics, healthcare, and transportation.
Featuring Citizen’s Hi-Lift metal print mechanism, the CL-S521 ensures reliable label printing at speeds of up to 6 inches per second with quick first-label output—ideal for high-volume workflows. This rugged model supports media widths from 0.5 inch to 4 inch, including wristbands, courier labels, and specialty tags, with an extra-large roll capacity of up to 200 mm external diameter.
Equipped with USB 2.0 and Serial RS-232C interfaces as standard and optional Ethernet, Parallel, or Wi-Fi connectivity, the CL-S521 is future-proof and easily integrates with legacy and modern systems. The printer supports Cross-Emulation, enabling automatic switching between Zebra ZPL-II and Datamax emulations for flexible software compatibility.
Compact yet powerful, the Hi-Open vertical case design ensures easy media access without increasing the printer’s footprint, while the internal power supply keeps your workspace clean and clutter-free.
Product Features
- Direct Thermal printing – no ribbon required
 - Prints at up to 6 IPS (150 mm/s) for fast performance
 - Durable Hi-Lift all-metal mechanism for industrial-grade reliability
 - Hi-Open case allows vertical access with zero footprint expansion
 - USB 2.0 + Serial RS-232 interfaces (standard)
 - Optional Ethernet, Wi-Fi (802.11b/g), and Parallel connectivity
 - Cross-Emulation – Auto-switch between ZPL-II and Datamax
 - Adjustable sensors for black mark, gap, and notch detection
 - Large media capacity: accepts rolls up to 8 inches (200 mm external)
 - Energy-efficient: integrated internal power supply
 - Prints labels up to 4 inch wide, on media from 0.5 to 4 inches
 - Applications: Logistics, ticketing, healthcare, manufacturing, couriers
 
Product Specifications
Specification  | Details  | 
Print Method  | Direct Thermal  | 
Print Resolution  | 203 dpi (8 dots/mm)  | 
Max Print Speed  | 6 IPS (150 mm/s)  | 
Max Print Width  | 4 inches (104 mm)  | 
Media Width  | 0.5 inch – 4inch  | 
Media Thickness  | 63.5 – 254 µm  | 
Max Media Roll Diameter  | 200 mm external (8”) / 125 mm internal (5”) on 1 inch core  | 
Max Media Length  | 1625 mm (64 inches)  | 
Interfaces (Standard)  | USB 2.0 (Full Speed), RS-232 Serial  | 
Optional Interfaces  | Ethernet (10/100 BaseT), Parallel (IEEE 1284), Wi-Fi (802.11b/g)  | 
Media Sensors  | Adjustable gap, black mark, notch  | 
Emulations Supported  | ZPL-II, Datamax, Cross-Emulation, CBI BASIC Interpreter  | 
Memory (RAM / Flash)  | 16MB SDRAM (1MB user), 4MB Flash (1MB user)  | 
Mechanism  | Hi-Lift all-metal, wide-opening head  | 
Control Panel  | 4 LEDs, 4 control buttons  | 
Power Supply  | Internal (auto-switching)  | 
Dimensions (W x D x H)  | 231mm x 289mm x 183mm  | 
Weight  | 3.6 kg  | 
Certifications  | CE, FCC Class A, C-Tick  | 
Operating Temperature  | 5 – 40°C, 30–85% RH (non-condensing)  | 
Software Support  | Free drivers (Windows, Linux, and others), CD included  | 
Warranty  | 2 Years  | 
    
            
        
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