We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Black desktop thermal receipt printer with top paper exit and built-in power supply

Citizen

Citizen CT-S310II-U-BK Receipt Printer 160 mm/s USB Serial

SKU CH-A0PN-9NGTW MPN CT-S310II-U-BK

A compact direct-thermal desktop printer producing receipts and barcodes at 160 mm/sec with dual USB and serial interfaces, paper-saving function and ENERGY STAR power supply

  • ColorBlack
  • Print TechnologyDirect Thermal
  • Printer TypeDesktop
  • Print Speed160 mm/sec
  • Max Resolution(B&W)8 dots / mm (203 dpi)
  • Memory192K bytes for character, 384K bytes for graphic (Non-Volati
  • Print receipts quickly at 160 mm per second
  • Connect via USB or serial interfaces for flexible integration
  • Save up to 20 percent paper with built-in reduction function
  • Reduce power consumption by 45 percent with ENERGY STAR supply
  • Print on 58 mm or 80 mm paper widths

Receipt Printer for Retail and Hospitality

The Citizen CT-S310II-U-BK is a direct thermal desktop printer built for point-of-sale environments. It prints receipts and barcodes at up to 160 mm per second with a resolution of 203 dpi. The unit supports paper widths of 80.00 mm and 58.00 mm, making it suitable for standard and narrow receipt formats. It is designed for businesses needing reliable, high-speed transaction printing.

Compact Build with Dual Interface and Auto-Cutter

The black chassis houses an internal ENERGY STAR power supply, removing the need for an external brick and saving counter space. Connectivity includes a USB port and a 9-pin D-sub serial RS-232C connection for legacy or modern POS systems. A software-selectable cutter performs full or partial cuts, while the top-exit paper path keeps the printed receipt accessible. Operating range spans 5 to 45 degrees C.

160 mm/s Print Speed Drives Throughput

The single specification that decides fit is the maximum print speed of 160 mm/sec. This rate determines how quickly queues clear during peak trading hours. Buyers who need faster output for high-volume venues should note this ceiling. The printer also handles 1D and 2D barcodes including QR Code and PDF417, with non-volatile memory of 192K bytes for characters and 384K bytes for graphics.

Highlights

  • Print receipts quickly at 160 mm per second
  • Connect via USB or serial interfaces for flexible integration
  • Save up to 20 percent paper with built-in reduction function
  • Reduce power consumption by 45 percent with ENERGY STAR supply
  • Print on 58 mm or 80 mm paper widths

Specifications

BrandCITIZEN
ModelCT-S310II (CT-S310II-U-BK)
ColorBlack
Print TechnologyDirect Thermal
Printer TypeDesktop
Print Speed160 mm/sec
Max Resolution(B&W)8 dots / mm (203 dpi)
Memory192K bytes for character, 384K bytes for graphic (Non-Volatile Memory)
Fonts IncludedNumber of Columns:
80.00 mm Font A: 48, Font B: 64, Font C 72
58.00 mm Font A: 35, Font B: 46, Font C 52
Character Size (W x H) Font A: 1.50 x 3.00 mm, Font B: 1.13 x 2.13 mm, Font C: 1.00 x 2.00 mm
Barcode TypeUPC-A/E, JAN (EAN) 13/8 columns, ITF, CODE39, CODE128, CODABAR (NW-7), CODE93, PDF417, QR Code, GS1-DataBar
CutterPartial / Full cut available by software setting
Reliability MCBF200 Million pulses or 150 Km, 2 million cuts
Media TypeThermal receipt paper
Media sizes supportedPaper Width: 80.00 mm and 58.00 mm
Printing Width: 72.00 mm, 64.00 mm, 52.50 mm, 48.00 mm, 45.00 mm, 48.75 mm, 68.25 mm
InterfaceSerial (RS-232C) (Connector: 9pin D-sub) + USB
Humidity Range Operating10% to 90% RH non condensing
Max Operating Temperature5 to 45 degrees C
Min Operating Temperature-4 to 140 degrees F
Power Supply100 - 240V, 47-63 Hz, Engery Star approved
Power ConsumptionPrinting: 32 Watts
Sleep: 0.6 Watt, 0.18 Watt (USB power save mode)
Dimensions5.51" x 7.67" x 5.19"
Weight3.96 lbs.
FeaturesEnvironmentally Friendly:
The new CITIZEN CT-S310II receipt printer is a green step forward towards reducing negative impact on the environment and it is Energy Star compliant. We invite you to take advantage of its benefits including lower cost with more features, lower power consumption and excellent paper savings
Dual Interface:
With a USB and serial interface on board, the CT-S310II is a future-proof investment
Long Life Print:
The new LLP functions can extend the print head life up to 200.00 km
Cable IncludedUSB Cable
Shipping weight11.34 kg
Package size533 × 406 × 279 mm

Questions about this item

What printing speeds does the USB and serial interfaces actually sustain?

The printer reaches 160 mm/sec over both the USB and RS-232C links; throughput is limited by the print engine rather than the interface.

What paper widths and roll sizes fit the CT-S310II?

It takes 80 mm and 58 mm wide thermal rolls; supported print widths are 72, 68.25, 64, 52.5, 48.75, 48 and 45 mm depending on the selected font and paper size.

How do you load paper and set the cutter so it does not jam?

Open the top cover, drop the roll in with paper feeding from the bottom, pull a short length through, close the cover firmly, then choose full or partial cut in the driver — skipping the cover-closure step causes most jams.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.