Health Care Products
Electronic Calculators
Mini Printers
  Mini Printers
Line Thermal Printers


Printing speed:200 mm/sec
Paper roll 58mm
Paper roll 60mm
Paper roll 80mm
Paper roll 83mm


Paper front exit type  
Built-in power supply type AC adapter type

Paper roll Paper roll Paper roll Paper roll
82.5mm 80mm 60mm 58mm

The 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 - 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
  • Can be desktop or wall mounted

Easy maintenance

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

Splash proof
(IEC60529 IPX1)

Operation panel

  • LED indicates the printer's status, types of errors, and messages.
  • Easy maintenace of printer head and cutter with using of LED messages.


  • Green: Power is on. It flashes when dats 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.


  • FEED button: Not only to feed the paper, but to set for memory switches and running self-printing.

Printing method Line thermal dot print method
Printing width
80 mm / 640 dots, 72 mm / 576 dots,
64 mm / 512 dots, 54.5 mm / 436 dots,
54 mm / 432 dots, 52.5 mm / 420 dots,
48 mm / 384 dots, 45 mm / 360 dots,
48.75 mm / 390 dots, 68.25 mm / 546 dots
Dot density 8 × 8 dots / mm (203 dpi)
Printi speed Max. 200 mm/sec, 2400 dots lines / sec. (fastest, print density 100%)
Number of print columns
Font 83mm 80mm 60mm 58mm Dot configuration
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 PC850/852/857/858/860/863/864/865/866/
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 Paper roll: 83+0/-1 mm, 80+0/-1 mm, 60+0/-1 mm, 58 mm+0/-1 × Φ 80 mm
Paper thickness: 0.065 - 0.075mm (core tube diameter: inner 12 mm/outer 18mm)
0.075 - 0.150mm (core tube diameter: inner 25.4 mm/outer 32 mm)
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
Supply voltage DC 24V ± 5%
Power consumption Approx. 45 W (normal printing), 3W (standby)
AC adapter
(36AD2, 36AD3)
Rated input: AC 100 to 240 V, 50/60 Hz, 150 VA
Rated output: DC24 V, 2.1 A
Weight 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 (*4) 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

(*1) When paper width is 83, 80, 60 or 58 mm.

(*2) The number of printable column is selected using a memory switch. The number of columns noted in this able refer to typical models. The number of columns varies depending on specifications.

(*3) Characters appear small because the dimensions include a blank area surrounding each character.

(*4) At normal temperature and humidity using recommended paper.

(*5) Compliant if the Citizen Systems AC adapter (36AD2/36AD3) is used.

Type classification

CT-S651 S 3 RS E BK P L M1
(1) (2) (3) (4) (5) (6) (7) (8) (9)

(1) Model type CT-S651
(2) Power Supply DC: No power source
S: Built-in power supply type
(AC adaptor built-in)
A: AC adaptor type
(3)Paper width 2: 2 inch (58/60mm)
3: 3 inch (80/83mm)
(4) Interface PA: Parallere (IEEE 1284)
RS: Serial (RS-232C)
UB: USB only
UH: USB with hub
ET: Ethernet (standard type)
ES: Ethernet (multi-function type)
UP: Powered USB
(5) Market U: USA
E: Europe/Asia
C: China
*AC power cord, serial I/F screw,
firmware and other specifications
vary according to markets.
(6) Body case color WH: Cool white
BK: Black
(7) PNE sensor None: withtout PNE sensor
P: with PNE sensor
(8) Label None: Standard type
L: Label type
(9) Black mark None: No sensor
M1: Right
M2: Left

Windows 7 Windows Vista Windows XP Windows 2003 OPOS CUPS JAVA POS


"Model information" "Memory switch"
Customization for "Attributes" Customization for "User font"

Accessories (Standard)

AC adaptor
*AC adaptor type (A) only
AC power cord

Interface cover
AC adaptor type (A)

Interface cover
Built-in power supply type (S)
Sample paper roll

Power switch cover

CD-ROM (Driver/Manual) Quick start guide  

Accessories (Optional)

   Interface card

TZ66802 (IF1-PA01)
TZ66801 (IF1-RS01)
TZ66803 (IF1-UB01)
TZ66809 (IF1-UH01)
Powered USB
TZ66804 (IF1-UP01)
Ethernet (multi-function type)
TZ69901 (IF1-es01)

    Other accessory

  • Splash proof cover
  • Vertical mount stand
  • Wall mount kit