NT3S-ST123B-E belongs to Omron NT3S small HMI family, panel mounting structure. The display is green monochrome STN LCD with LED backlight and analog resistive touch panel. Total application memory is 63KB. It supports numerical input, bar graph, alarm message and multi-language text display.

Two serial ports are available: one RS232 port for PC programming or printer connection; the other configurable RS232/422/485 port for PLC communication. Built-in RTC retains time information after power loss. Programming software is NTXS. Front panel protection class IP65, rear housing IP20. Dimensions 140 ×77 ×35 mm, panel cutout 132 ×69 mm. Operating temperature 0~50℃. LED indicators show power and running status for fast on-site troubleshooting.

NT3S-ST123B-E is obsolete Omron HMI spare part. Many legacy automation machines still adopt NT3S operator panels. When the original panel fails, replacement with identical NT3S-ST123B-E can reuse panel cutout, serial wiring and existing NTXS project file. Technicians install the panel, download screen program and verify PLC communication, so machine local operation and monitoring system resumes operation and reduces downtime.

Before shipment, every NT3S-ST123B-E undergoes comprehensive functional inspection including power-on self-test, touch panel test, LCD display inspection, serial communication verification and memory read-write test. All products come with 12-month warranty. Our automation technical team provides remote support for installation, wiring guidance, project download and fault diagnosis. Fast global shipping available for urgent maintenance orders.

For automation maintenance engineers and system integrators, NT3S-ST123B-E is reliable spare compact touch HMI for legacy Omron PLC control systems. It restores local machine operation and process data monitoring functions, extends service life of automation assets and avoids whole control system renovation.