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HMI Operator Interfaces
EA1-S3ML
AutomationDirect C-more Micro 3.1-inch Monochrome Touch-Screen HMI
About this part EA1-S3ML is a retired AutomationDirect C-more Micro EA1 Series operator interface with a 3.1-inch monochrome STN LCD, 128 x 64-pixel resolution, an analog-resistive touch panel, five programmable function keys, and one built-in RS-232 RJ12 serial port. Its LED backlight provides selectable green, lime, yellow, amber, and red backgrounds. AutomationDirect retired the model in May 2025 and identifies EA3-S3ML as a comparable replacement
Configurations vary. Verify the exact unit before choosing a replacement.
No archived photo available
Key Facts
Specifications
What Does EA1-S3ML Mean?
Supported Serial Protocols and Drivers
Replacement and Connection Notes
Documents
Images
Listing history
Aliases
Related
Key Facts
Manufacturer AutomationDirect C-more Micro EA1 Series
Part number EA1-S3ML
Product family Configuration-specific
Device type 3.1-inch monochrome touch-screen HMI
Configuration status Configuration varies
Application class Industrial automation and process equipment
Category HMI Operator Interfaces
Specifications
Identification
Brand AutomationDirect C-more Micro Series EA1 Micro-Graphic
Display
Display 3.1-inch STN monochrome LCD Resolution 128 x 64 pixels Image modes Normal and inverse monochrome Viewing area 70.8 x 35.2 mm (2.789 x 1.385 in) Active area 67.8 x 32.0 mm (2.670 x 1.259 in) Backlight LED; selectable green, lime, yellow, amber, or red background; not user-replaceable
Operator interface
Touch panel Analog resistive, single-touch; 0.5 N maximum operating force; minimum 1,000,000 cycles Function keys Five user-defined, labelable keys; each has a programmable red LED; minimum 500,000 cycles
Capacity
User memory 768 kB Screens Up to 999, limited by project memory usage
Communications
Built-in port One RS-232 RJ12 serial port Maximum configured port speed Up to 38.4 kbaud Ethernet Not provided USB programming port Not provided
Programming
Software EA-MG-PGMSW C-more Micro programming software, version 1.5 or later Programming cable EA-MG-PGM-CBL required
Electrical
Panel input 5.0 VDC nominal (4.75–5.25 VDC), supplied through the RJ12 connection Power consumption 1.05 W Optional external-power method EA-MG-P1 or EA-MG-SP1 adapter accepts 12–24 VDC nominal (10.8–26.4 VDC); both adapters are obsolete
Mechanical
Overall dimensions 114.0 x 82.0 x 40.5 mm (4.488 x 3.228 x 1.593 in) Panel cutout 102.0 x 70.0 mm (4.016 x 2.756 in) Mounting thickness 1–5 mm (0.04–0.2 in) Weight 165 g (5.82 oz)
Environmental
Operating temperature 0–50 °C (32–122 °F) Storage temperature −20 to +60 °C (−4 to +140 °F) Humidity 5–95% RH, non-condensing Installation environment Pollution Degree 2; no corrosive gases Mounted rating NEMA 4/4X and IP65 when correctly mounted; indoor use only
Compliance
Approvals CE (EN 61131-2), UL 508, cUL Canadian C22.2 No. 142-M95; UL file E157382; CSA file 234884; RoHS status Yes
Supplied items
Included hardware Mounting hardware, gasket, and panel-cutout template
What Does EA1-S3ML Mean?
AutomationDirect’s part-number key decodes the identifier as a touch-screen EA1 Micro-Graphic panel with an STN monochrome display and LED backlight.
Segment Field Interpretation EA1 Series Micro-Graphic series S Display type STN 3 Display size 3-inch class M Display color Monochrome L Backlight type LED No W suffix Backlight-color option Red, green, amber, lime, and yellow No -N suffix Features Touch-screen model
Supported Serial Protocols and Drivers
The exact-part cut sheet documents the following serial protocol and controller-driver support.
Allen-Bradley DH485/AIC/AIC+, DF1 half duplex, and DF1 full duplex Modbus RTU and JTEKT-addressing Modbus GE SNPX Mitsubishi FX Direct, Q CPU, and QnA serial Omron Host Link and FINS Siemens PPI AutomationDirect SOLO temperature controllers and GS drives AutomationDirect Productivity Series serial, Do-more serial, and CLICK Modbus AutomationDirect DirectLOGIC K-Sequence and DirectNET
Replacement and Connection Notes
EA3-S3ML is the manufacturer-designated comparable replacement, but it is not documented as an unconditional drop-in substitute.
Comparable replacement EA3-S3ML
Native communications RS-232 through the built-in RJ12 port
Optional legacy communications EA-MG-SP1 adds RS-232/RS-422/RS-485 and external DC power; the module is obsolete
Programming connection EA-MG-PGM-CBL USB-to-RS-232 cable assembly
Documentation Downloads
Local PDF copies
Part Photos
0 images
Historical archive images for identification, labels, connectors, and condition reference, not current inventory.
Historical Listings & Prices
Historical listing data, not a current offer
Archive records 1 Tracked historical listing records
Historical median price $1,999.99 Based on archived listing records
Recorded price range $1,999.99 - $1,999.99 Low to high recorded listing price
Local documents 5 PDF copies available from Sonisys
Recorded price context
The typical recorded price range is $1,999.99 to $1,999.99. Based on 1 archived listing record; not a current offer, appraisal, or confirmed sale price.
View archived listing titles
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Other Part Numbers & Aliases
EA1-S3ML
