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STO & STU Series


THarmony's STO (Security Token Offering) and STU (Security Token Utility) products provide comprehensive solutions for tokenized securities, ensuring compliance, liquidity, and investor protection. With robust features such as smart contract automation and regulatory adherence, Harmony empowers businesses to seamlessly tokenize assets and access a global pool of investors while maintaining security and transparency.

                Harmony STO & STU

Technical Specifications

Range of product Harmony STO & STU
Product or component type Touch panel screen
Software designation Vijeo Designerr
Operating system Harmony
Processor name CPU RISC
Display size 3.4 inch
Display type Backlit monochrome STN LCD
Background colour Green, orange, and red
Display resolution 200 x 80 pixels
Touch panel Analogue
Backlight lifespan 10000 hours with red
50000 hours with orange
50000 hours with green
Brightness 8 levels
Contrast 16 levels via touch panel
Character font Japanese (ANK, Kanji)
Chinese (simplified Chinese)
Taiwanese (traditional Chinese)
[Us] rated supply voltage 24 V DC +/- 20 %
Inrush current 30 A
Local signalling 1 LED (green) for normal operation
Power consumption in W 5 W
Number of pages Limited by internal memory capacity
Processor frequency 333 MHz
Memory description Application memory 16 MB
Back up of data 128 kB
Integrated connection type 1 USB 2.0 type mini B
1 USB 2.0 type A
power supply - removable screw terminal block COM1 serial link - female RJ45 - RS232C/RS485 (rate: <= 115.2 kbits/s)
Supply External source
Realtime clock Access to the PLC real-time clock
Downloadable protocols Uni-TE
Third party protocols
Fixing mode By 2 spring clips, mounting on 1.6...5 mm thick panel
Enclosure material PPT
Marking CE
Height 77.5 mm
Width 116.5 mm
Depth 36.5 mm
Immunity to microbreaks 3 ms
Standards EN 61131-2
IEC 61000-6-2
UL 508
UL 1604
FCC Class A
Product certifications C-Tick
UL Class 1 Division 2 T5
UL Class 1 Division 2 T4A
Ambient air temperature for operation 0…50 °C
Ambient air temperature for storage -20…60 °C
Relative humidity 0…90 % without condensation
Operating altitude ≤ 2000 m
IP degree of protection IP20 (rear panel) conforming to IEC 60529
IP65 (front panel) conforming to IEC 60529
NEMA degree of protection NEMA 4X front panel (indoor use)
Shock resistance 15 gn for 11 ms conforming to IEC 60068-2-27
Vibration resistance +/- 3.5 mm (f = 5…9 Hz) conforming to IEC 60068-2-6
1 gn (f = 9…150 Hz) conforming to IEC 60068-2-6
Electromagnetic compatibility Resistance to radiated electromagnetic fields - test level: 10 V/m conforming to IEC 61000-4-3
Packing Units
Unit Type of Package 1 PCE
Number of Units in Package 1 1
Package 1 Height 9.0 cm
Package 1 Width 13.0 cm
Package 1 Length 18.5 cm
Package 1 Weight 360.0 g
Offer Sustainability
REACh Regulation REACh Declaration
REACh free of SVHC Yes
EU RoHS Directive Pro-active compliance (Product out of EU RoHS legal scope) EU RoHS Declaration
Mercury free Yes
China RoHS Regulation China RoHS declaration
RoHS exemption information Yes
WEEE The product must be disposed on European Union markets following specific waste collection and never end up in rubbish bins
California proposition 65 WARNING: This product can expose you to chemicals including: Lead and lead compounds, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to
Contractual warranty
Warranty 18 months