Τhe New CT-S651 is your Next Best Printing Solution for your receipt applications as it not only offers Front Exit and more features for less money, but also it is fully compatible with previous Citizen models and with competitive models including the TM-T88IV – making the CT-S651 the Best Value in any class!

  • High-speed (200 mm/s) printing
  • Compact design can be installed anywhere
  • Versatile design supports 3-inch (83/80 mm) and 2-inch (60/58 mm) wide paper rolls
  • Built-in power supply or AC adaptor types available
  • Printer status and errors indicated by 3 LEDs and a buzzer
  • Equipped with a fast and quiet cutter
  • Easy to clear cutter jams
  • Interchangeable interfaces
  • Built-in cash drawer kick-out interface
  • Memory switches make customization possible
  • Store user-defined characters and logos in user memory
  • Barcode and 2D barcode printing supported
  • 2-color printing supported (when specified paper used)
  • Driver and utility software included
  • Desktop

Easy Maintenance

  • Easy to clear paper jam by open the top cover and the front cover
  • Splash proof

Operation Panel

  • LED indicates the printer's status, types of errors, and messages.
  • Easy maintenance of printer head and cutter with using of LED messages.
  • FEED button: Not only to feed the paper, but to set for memory switches and running self-printing.


  • Green: Power is on. It flashes when data is incoming or a memory error has occurred.
  • Red: Operates in special modes or in errors.
  • Orange: Paper is low (paper near-end) or print head is hot.


Model CT-S651
Printing method Line thermal dot print method
Print width* 80mm/640 dots, 72mm/576 dots, 64mm/512 dots, 54.5mm/436 dots, 54mm/432 dots, 52.5mm/420 dots, 48mm/384 dots, 45mm/360 dots, 48.75mm/390 dots, 68.25mm/546 dots
Dot density 8 × 8 dots / mm (203 dpi)
Printing speed Max. 300 mm/sec, 2400 dots lines/sec. (fastest, print density 100%)
Number of print columns
Font Maximum number of characters
Dot configuration
83mm 80mm 60mm 58mm
Font A 53 48 36 35 12 × 24
Font B 71 64 48 46 9 × 17
Font C 80 72 54 52 8 × 16
Character size
(W × H)
Font A: 1.50 × 3.00 mm
Font B: 1.13 × 2.13 mm
Font C: 1.00 × 2.00 mm
Character type Alphanumeric, International, PC437/850/852/857/858/860/863/864/865/866/WPC1252/Katakana/Thai code 18
Operation panel 3 LEDs, Feed button
User memory 384 Kb (capable of storing user-defined characters and logos)
Barcode type UPC-A/E, JAN(EAN) 13/8 columns, ITF, CODE 39, CODE 128, CODABAR (NW-7), CODE 93, PDF417, QR Code
Line spacing 4.23mm (1/6 inch) (changeable using commands)
Paper roll
Width Paper roll: 83+0/-1 mm, 80+0/-1 mm, 60+0/-1 mm, 58 mm+0/-1 × F 80 mm
Thickness 65 to 75µm (core tube diameter: inner 12mm / outer 18mm)
75 to 150µm (core tube diameter: inner 25.4mm / outer 32mm)
Interface Serial (RS-232C compliant), Parallel (IEEE1284 compliant), USB, USB with hub, Ethernet, powered USB
External device port Cash drawer kick-out
Buffer size 4K bytes / 45 bytes
Pupply voltage DC 24V ± 5%
Power consumption Approx. 45 W (normal printing), 3W (standby)
Power source Rated input: AC 100 to 240 V, 50/60 Hz, 150 VA
Rated output: DC24 V, 2.1 A
Weight (approx.) CT-S651S (Built-in power supply type): 1.9kg
CT-S651A (AC adaptor type): 1.5kg
Outer dimensions
(W × D × H)
CT-S651S (Built-in power supply type): 145 × 192 × 142 mm
CT-S651A (AC adaptor type): 145 × 192 × 114 mm
Operating temperature and humidity 5 to 45 °C, 10 to 90 % RH (no condensation)
Storage temperature and humidity -20 to 60 °C, 10 to 90 % RH (no condensation)
Reliability§ Print head life: 150 km, 200 million pulses
Auto cutter life: 2 million cuts (full cut), 1.6 million cuts (partial cut)
Safety standards
UL, C-UL, FCC class A, TUV-Bauart, CE marking