The HMISTO735 is a 4.3-inch widescreen color touch operator panel from the Schneider Electric Harmony STO and STU range, designed for machine visualization and process control applications. It features a TFT LCD display with 65,536 colors and 480 x 272 pixel resolution, powered from 12-24 V DC and configured using EcoStruxure Operator Terminal Expert software. Technical specifications: Commercial reference: HMISTO735 Manufacturer: Schneider Electric EAN: 3606480920912 Series / range: Harmony STO and STU Product type: Touch screen operator panel Display size: 4.3 inch Display type: TFT LCD color Display colors: 65,536 Display resolution: 480 x 272 pixels Touch type: Analog Backlight life: 50,000 hours (white) Brightness levels: 16 (adjustable via touch panel) Rated supply voltage: 12-24 V DC Power consumption: 8.1 W Application memory: 26 MB Data backup memory: 512 kB Number of pages: 8,999 Ethernet port: 10BASE-T/100BASE-TX Interfaces: 1 x USB 2.0 Type A, 1 x USB 2.0 Mini-B, 1 x Ethernet TCP/IP RJ45 Supported protocols: Modbus TCP, Modbus, third-party protocols PLC compatibility: Omron, Mitsubishi, Siemens, Allen-Bradley Real-time clock: Optional (with RTC battery set) Panel cutout: 77.5 x 112.5 mm (66 x 105 mm with mounting adaptor) Mounting: 2 installation fasteners, panel thickness 1.5-6 mm Housing material: PPT Weight: 0.22 kg IP protection: IP65 (front panel), IP20 (rear panel) NEMA rating: NEMA 4X/13 front panel (indoor use) Operating temperature: 0-50°C Storage temperature: -20-60°C Relative humidity: 10-90% (no condensation) Operating altitude: up to 2,000 m Certifications: CE, C-Tick, ATEX Zone 2/22, KCC, UL, cUL, UKCA Features and benefits: Wide TFT LCD with 65,536 colors provides clear visualization of process data and alarms Multi-language font support including ASCII, Cyrillic, Simplified and Traditional Chinese, Japanese, and Korean Dual USB ports and Ethernet RJ45 enable flexible connectivity to PLCs and automation networks Loadable third-party protocols allow integration with Omron, Mitsubishi, Siemens, and Allen-Bradley controllers IP65-rated and NEMA 4X/13 front panel protection suited to industrial panel mounting Applications: Machine operator interfaces on industrial automation panels Process monitoring and control in manufacturing environments Multi-brand PLC system visualization using Modbus TCP or third-party protocols Light industrial installations requiring ATEX Zone 2/22 certification Compliant with EN 61131-2, EN 61000-6-2, EN 61000-6-4, UL 61010-1, UL 61010-2-201, CSA C22.2 No 142, CSA C22.2 No 213, and ANSI/ISA 12.12.01. Part of the Schneider Electric Harmony STO and STU range. Also known as: Schneider HMISTO735, Schneider Electric HMISTO735, Schneider Harmony HMI touch panel, Magelis STO operator panel.