# Label printer CITIZEN SYSTEMS CL-S521II — Direct thermal, 203×203 DPI, 150 mm/s, USB, 12.5–118 mm

**URL:** https://aio.lv/en/product--citizen-systems-cls521iinebxx--12246196
**Data updated:** 2026-04-02 14:31 (EEST)
**Category:** POS & Label Printers
**Manufacturer:** CITIZEN SYSTEMS
**Manufacturer code:** CLS521IINEBXX
**EAN:** 5704174206361
**Warranty:** 2 Years
**Availability:** Out of stock

## Summary description

CITIZEN SYSTEMS CL-S521II is a direct thermal label printer with 203×203 DPI resolution and up to 150 mm/sec print speed. It supports roll media widths from 12.5 to 118 mm and connects via wired interfaces including USB. Designed for retail, logistics and light industrial labelling tasks where reliable direct thermal printing is required.

## Long description

CITIZEN SYSTEMS CL-S521II is a direct thermal label printer offering 203 × 203 DPI resolution and a top speed of 150 mm/s. It supports roll media widths from 12.5 mm to 118 mm and accepts roll diameters up to 127 mm. The desktop device includes built-in emulations for ZPL and Datamax plus a BASIC Interpreter for programming flexibility, and connects via wired interfaces such as USB. Its Hi-Open case and integrated power supply minimise footprint while enabling quick media loading and safe closing.
Advantages
The CL-S521II combines a compact industrial desktop design with a proven all-metal Hi-Lift mechanism for robust paper handling and long-term reliability. ARCP ribbon control technology helps produce consistent, readable labels. On-board emulations and the BASIC Interpreter provide compatibility with existing label formats and host systems, simplifying integration into retail, logistics and light industrial environments. The unit supports a wide range of ribbon and media types and offers a balance of print quality, speed and low space requirement.
Suitable for
Retail shelf labelling and price marking
Shipping and logistics labels for parcels and pallets
Warehouse identification and inventory tags
Light industrial product and component labelling
Office and back-office labelling tasks
Key specifications
Printing method: Direct thermal
Resolution: 203 × 203 DPI
Maximum print speed: 150 mm/s (6 inches/s)
Supported media width: 12.5 mm – 118 mm
Maximum print width: 104 mm
Recommended media roll diameter: up to 127 mm
Media thickness support: up to 0.250 mm
Ribbon support: inside- and outside-wound ribbons up to 360 m
Mechanism: Hi-Lift all-metal mechanism
Case design: Hi-Open vertical opening
Connectivity: Wired interfaces including USB
Integrated power supply; footprint-optimised design
Weight: 3.6 kg
How to use
Load thermal roll media according to the Hi-Open vertical opening, place the roll on the spindle and feed the label leading edge into the print path. If using ribbon, select the appropriate inside- or outside-wound ribbon and thread it per the ribbon path. Connect the printer to a host using the USB interface or other wired connection and install drivers or configure emulation settings (ZPL/Datamax or BASIC Interpreter) as required. Configure label size and media parameters in the driver or device menu before printing to ensure correct alignment and print quality.
Usage recommendations
Use direct thermal labels when durability requirements are moderate and exposure to heat, sunlight or solvents is limited. For longer-lasting labels or harsh environments, choose appropriate ribbon and label materials and verify compatibility. Regularly clean the print head and mechanism to maintain print quality and extend service life; follow manufacturer maintenance intervals and use recommended cleaning supplies.

## Specifications

### Printing

| Feature | Value |
|---|---|
| Colour | No |
| Maximum resolution | 203 x 203 |
| Print technology | Direct thermal |
| Print speed | 150 mm/sec |
| Maximum printing width | 104 mm |

### Paper handling

| Feature | Value |
|---|---|
| Supported paper width | 12.5 - 118 |
| Autocutter | Yes |
| Core diameter | 25.4 mm |
| Maximum roll diameter | 200 mm |

### Design

| Feature | Value |
|---|---|
| Display | No |
| Product colour | Black |
| Control type | Buttons |
| Built-in display | No |

### Logistics data

| Feature | Value |
|---|---|
| Harmonized System (HS) code | 84433210 |

### Weight & dimensions

| Feature | Value |
|---|---|
| Weight | 3.6 kg |
| Height | 183 mm |
| Width | 231 mm |
| Depth | 289 mm |

### Ports & interfaces

| Feature | Value |
|---|---|
| Connectivity technology | Wired |
| USB 2.0 ports quantity | 1 |
| USB port | Yes |

### Features

| Feature | Value |
|---|---|
| Internal memory | 32 MB |
| Flash memory | 16 MB |
| Page description languages | ZPL II |

### System requirements

| Feature | Value |
|---|---|
| Windows operating systems supported | Windows 10, Windows 7, Windows 8, Windows Vista, Windows XP |
| Mac operating systems supported | Y |
| Linux operating systems supported | Y |
| Server operating systems supported | Windows Server 2003, Windows Server 2008 R2, Windows Server 2012 |

## FAQ

### What payment options are available?

AiO.lv offers several payment methods: Bank transfer. All transactions are 100% secure and encrypted.

### Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

### What is the warranty period?

All CITIZEN SYSTEMS products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized CITIZEN SYSTEMS service centers and through AiO.lv

### Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

### Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. More information about warranty service: https://aio.lv/en/warranty

### How can I tell if this product suits my needs?

When making a choice, we recommend paying attention to the key features: display, maximum printing width, print speed, weight, print technology, product colour, compatibility with your devices or usage conditions, material quality, functionality, and warranty terms. These characteristics will help you determine how well the model meets your needs.

## Image

https://aio.lv/img/cache/product/12246196/68146994_large.webp