Citizen CL S521

The CL-S521 direct thermal printer combines robust printing with superior price performance, best quality, ease of use and precision engineering.

  • Packed with features for industrial desktop printing

    The CL-S521 offers a reliable, easily integrated industrial desktop printing solution.  These units are supplied as standard with on-board ZPL® and Datamax® emulations plus BASIC Interpreter programming support, offering maximum flexibility and easy compatibility with other applications.

    • Handles a range of media types, including specialised labels and wristbands.
    • Powerful on-board 32 bit processor for fast output
    • 16Mb of RAM and 4Mb of flash
    Key benefits
    Front exit - prevents damage from moisture or foreign objects
    Variable paper width - 0.5 inches (12.5 mm) – 4.6 inches (118.1 mm)
    Durable design - Citizen's proven Hi-Lift™ all-metal mechanism
    Paper thickness up to 0.250mm
    Fast print out - 6 inches per second (150 mm per second)
    Large media capacity - holds rolls up to 5 inches (127 mm)
    Hi-Open™ case for vertical opening, no increase in footprint and safe closing.
    Low space requirement - integrated power supply enables clean work station

  • Specifications



    Printing Method

    Direct Thermal printing

    Printing Speed (Max.)

    up to 150 mm/sec


    CLS521: 203 dpi

    CLS531: 300 dpi


    1 Scalable, 8 Bitmap resident

    TrueType Download

    Supported as Standard

    Control Language

    Automatically switches between ZEBRA® & Datamax® programming language

    Media Type

    Roll or Fanfold; Continues or Perforated; die cut labels; Tags & Tickets

    Media Sensing

    Label Gap, notch or reflective

    Resolution/Dot pitch

    CLS521: 203 dpi, 8 dots/mm

    CLS531: 300 dpi, 12 dots/mm

    Media width (Min-Max)

    12.5 - 118 mm

    0.5 - 4.65 inches

    Media Roll Size (Max)

    125 mm, 5 inches (Internal); External media supply path available

    Media Thickness


    0.0635 - 0.254 mm

    0.0025 - 0.01 inches

    Printing width (Max)

    104 mm

    4.1 inches

    Printing length (Max)

    812 mm

    32 inches

    Label length (Min)

    12.7 mm

    0.5 inches

    Bar-code Symbologies

    Code39, Code93, ITF, Codabar, UPC-A/E, EAN-8/13, UPC and EAN 2 and 5-digit extensions, Plessey, Postnet, Interleaved 2 of 5, Code128 with subsets A/B/C and UCC Case Codes, Telepen, FIM & HIBC.

    2D Codes: PDF-417, Maxi Code, Datamatrix & QR Code

    Standard Interface


    Full Speed USB1.1


    RS232C, Baudrate from 2400-115200

    Optional Interfaces

    Parallel IEEE1284 (Compatible, Nibble, ECP Mode)

    Ethernet Lan

    WiFi, Wireless LAN



    8 Mb

    Flash Memory

    2 Mb



    8 Mb, 0.5 Mb available for user

    Flash Memory

    2 Mb, 0.5 Mb available for user


    3.6 Kg

    External Dimensions

    (W x D x H)

    231 x 289 x 186 mm

    Operating temp. range

    0 to 40 °C, Humidity 30 to 80%

    Storage temp. range

    -20 to 60 °C, Humidity 5 to 85%


    MCBF 1000 km, Print Head 50 km

    Safety compliance

    UL, C-UL, FCC : class A, CCC, CE Marking


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