# AutomationDirect EA3-S3ML

Hardware · `EA3-S3ML` · verification: source checked

The EA3-S3ML is a C-more Micro EA3 series touch screen HMI panel from AutomationDirect. It has a 3 in monochrome STN LCD with a 128 x 64 pixel resistive single-touch screen and LED backlight, and communicates over one Ethernet port, two serial ports and one microB-USB port. It mounts in a panel cutout and is programmed with EA-MG-PGMSW software.

## Specification

| Property | Value |
|---|---|
| Category | hmi |
| Weight | 0.3175 kg |
| Supply voltage | 5 VDC, 12-24 VDC |
| Screen size | 3 in |
| Resolution | 128 x 64 pixel |
| IP rating | IP65 |

## Connected

- Manufacturer: [AutomationDirect](https://machineschema.com/manufacturer/automationdirect.md)
- Protocols: [EtherNet/IP](https://machineschema.com/protocol/ethernet-ip.md), [MODBUS RTU](https://machineschema.com/protocol/modbus-rtu.md), [Modbus TCP](https://machineschema.com/protocol/modbus-tcp.md)

## Safety

- UL Listed, file # E157382.
- CE marked; RoHS compliant.
- No UL Recognized, UL Hazardous or CSA file listed.
- Housing rating NEMA 4/4X and IP65, panel mounting.
- Environmental requirement: indoor use only.

## Study notes

- Viewable size is 3.1 in; display orientation is landscape; maximum colours are 12-colour monochrome at 150 nits brightness.
- Ports: (1) Ethernet 10/100Base-T (RJ45), (1) RS-232 (RJ12), (1) RS-232/422/485 (DB15 female), (1) microB-USB.
- Port speeds: up to 38.4k baud serial and 10/100 Mbps Ethernet.
- Supported port protocols include Allen-Bradley DF1 full/half duplex, DH485/AIC/AIC+, AutomationDirect CLICK, DirectLOGIC K-Sequence and DirectNET, Do-more/BRX, ECOM, GS drives, Productivity, SOLO temperature controller, GE SNPX, Mitsubishi FX Direct, Mitsubishi Q, Mitsubishi QnA Ethernet, Omron FINS serial, Omron Host Link and Siemens S7-200 Serial-PPI.
- Programming software is EA-MG-PGMSW; the spec table states v4.2 or later while the product notes state version 4.1 or later.
- Programming requires a USB A to Micro B cable or an Ethernet cable; the panel can be powered from the serial port of most AutomationDirect PLCs or from the USB port during programming.
- The EA3 series does not support the EA-MG-SP1 or EA-MG-P1 option modules.
- Backlight colour is selectable: red, green, amber, yellow, lime, pink1, pink2, pink3, emerald1, emerald2, emerald3 and white.
- Ship weight 0.7 lb; country of origin Japan; HS code 8471.30.
- Box contents: panel, quick start guide, DC power connector (EA-MG-DC-CON), gasket (EA-MG-S3ML-GSK) and two mounting brackets (EA-MG-S3ML-BRK).

## Sources

1. [C-more Micro HMI: 3in, monochrome STN LCD, touch screen (PN# EA3-S3ML) | AutomationDirect](https://www.automationdirect.com/adc/shopping/catalog/hmi_(human_machine_interface)/graphical_hmi_devices/hmi_panels/ea3-s3ml) (accessed 2026-10-26)
2. [EA3 S3ML cutsheet](https://cdn.automationdirect.com/static/specs/cutsheet/EA3-S3ML_cutsheet.pdf) (accessed 2026-10-26)

---

Source page: https://machineschema.com/hardware/automationdirect-ea3-s3ml  
JSON: https://machineschema.com/hardware/automationdirect-ea3-s3ml.json  
License: CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). Cite Machine Schema and the original sources.