
Touch panel screen, Harmony STO & STU, 3.4 200 x 80 pixels, With Software
Touch panel screen, Harmony STO & STU, 4.3inch wide, Ethernet
This Magelis STO small touchscreen operator interface (HMI) is supplied with 12V to 24V DC, has a 4.3" color TFT LCD display with, 480 x 272 pixels and 26MB EPROM. It also has 1 host + 1 mini-B USB ports and 1 Ethernet TCP/IP port. It is ideal for optimized information and communication with automation systems in industry and infrastructure such as compact machines, handling systems, food & beverage machines and pharmaceutical industry. The screen displays color graphic pages. Its RS485 host port makes it ideal to supervise and control simple systems and machines.
| Range of product | Harmony STO & STU |
| Product or component type | Touch panel screen |
| Software package | EcoStruxure Operator Terminal Expert |
| Processor name | ARM926EJ-S |
| Display size | 4.3 inch |
| Display type | Colour TFT LCD |
| Display colour | 65536 colours |
| Display resolution | 480 x 272 pixels |
| Touch panel | Analogue |
| Backlight lifespan | 50000 hours with white |
| Brightness | 16 levels via touch panel |
| Character font | ASCII (European characters), Cyrillic, Taiwanese (traditional Chinese), Chinese (simplified Chinese), Japanese (ANK, Kanji), Korean |
| [Us] rated supply voltage | 12...24 V DC - 10...20 % |
| Power consumption in W | 8.1 W |
| Number of pages | 8999 |
| Port Ethernet | 10BASE-T/100BASE-TX |
| Memory description | Back up of data 512 KB, Application memory 26 MB |
| Integrated connection type | 1 USB 2.0 type mini B, 1 USB 2.0 type A, 1 Ethernet TCP/IP - RJ45 |
| Supply | External source |
| Realtime clock | With RTC-battery set optional |
| Downloadable protocols | Modbus TCP, Modbus, Third party protocols |
| Range compatibility | Omron, MitsubishI, Siemens, Allen-Bradley |
| Fixing mode | By 2 installation fasteners, mounting on 1.5 to 6 mm thick panel |
| Enclosure material | PPT |
| Front material | Plastic |
| Cut-out dimensions | 77.5 x 112.5 mm, 66 x 105 mm with mounting adaptor |
| Height | 90.4 mm |
| Width | 124.9 mm |
| Depth | 38.8 mm |
| Net weight | 0.22 kg |
| Standards | UL 61010-2-201, EN 61131-2, EN 61000-6-2, EN 61000-6-4, CSA C22.2 No 213, CSA C22.2 No 142, UL 61010-1, ANSI/ISA 12.12.01 |
| Product certifications | CE, C-Tick, ATEX zone 2/22, KCC, UL, cUL, UKCA |
| Ambient air temperature for operation | 0…50 °C |
| Ambient air temperature for storage | -20…60 °C |
| Relative humidity | 10…90 % without condensation |
| Operating altitude | 2000 m |
| IP degree of protection | IP65f (front panel), IP20 (rear panel) |
| NEMA degree of protection | NEMA 4X/13 front panel (indoor use) |
| Shock resistance | 15 gn for 11 ms conforming to IEC 61131-2 |
| Vibration resistance | 1 gn (f = 5…150 Hz) conforming to IEC 61131-2, 3.5 mm constant amplitude (f = 5…150 Hz) conforming to IEC 61131-2 |
| Electromagnetic compatibility | Resistance to radiated electromagnetic fields - test level: 10 V/m (80 MHz...2.7 GHz), Resistance to electrostatic discharge - test level: 8 kV level 3 (air discharge) conforming to EN 61000-4-2, Resistance to electrostatic discharge - test level: 6 kV level 3 (direct contact) conforming to EN 61000-4-2 |
| Package 1 | 1 PCE, 18.600 cm × 13.800 cm × 8.200 cm (L × W × H), 534.000 g |
| Package 2 | 12 S03, 40.000 cm × 30.000 cm × 30.000 cm (L × W × H), 6.840 kg |
| Package 3 | 288 P12, 120.000 cm × 80.000 cm × 110.000 cm (L × W × H), 178.440 kg |
Official documents from Schneider Electric, downloaded directly from the manufacturer.
HMISTO735 is sourced on request — request a quote and we'll confirm the exact availability and shipping timeline for this specific unit.
Local pickup from our Groningen, Netherlands warehouse may be possible — contact us before ordering to check availability and arrange a collection time.
Yes — mention it when you request a quote for HMISTO735 and we'll include express shipping options in our reply.
For a critical breakdown, contact us directly at +31 (0)50-7110348 or sales@partnerplc.com — we can look into same-day courier or dedicated taxi/hotshot delivery for HMISTO735, subject to availability and destination.

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