Alpha 4120 NEMA 12
The Alpha 4120 NEMA 12 is an industrial LED display with a 91,4 x 12,2 cm (36" x 4,8") wide screen (matrix 120 x 16 px) in a rugged NEMA 12 enclosure. Shows production data, alarms and instructions in red, green or amber, on one or two lines. Discontinued, replaced by the Alpha 4120 RGB.
Still supported for software and repairs.
Legacy model, no longer available as new. Current alternative: Alpha 4120 RGB
The extruded-aluminium NEMA 12 enclosure protects against dust and splashing water, ideal for production halls and warehouses. The Alpha 4120 NEMA 12 connects via RS232 or RS485 to your network and is programmed with the handheld, Eurostyle keyboard, IR remote or Alpha software.
Product information Alpha 4120 NEMA 12
| Matrix | 120 x 16 px |
|---|---|
| Display size | 91,4 x 12,2 cm (36" x 4,8") |
| Character height | 12,2 cm (4,8") / 4,3 cm (2,1") |
| Characters per line | 12 / 20 |
| Color | red, green or amber (R version red only) |
| Pixel pitch | 0,8 cm (0,3") |
| Enclosure (WxDxH) | 102,7 x 20,0 x 14,2 cm |
| Weight | 12,7 kg |
| Character set | international |
| Message capacity | 81 messages |
| Interface | RS232 / RS485 |
| Power | 100-132 / 200-252 VAC, 60 Hz, autoranging; field wired |
| Programming | handheld, Eurostyle keyboard, IR remote or Alpha software |
| Enclosure material | extruded aluminium |
| Protection rating | NEMA 12 / IP52 |
| Approvals | UL/CSA, EN 60950, AS/NZS, FCC Class A, CE |
| Operating temperature | 0-60 °C |
| Humidity | 0-95% non-condensing |
| Real-time clock | ✔ |
Frequently asked questions
Which colors does the Alpha 4000 NEMA 12 show?
Each dot can show red, green or amber (tricolor). The R version is red only.
Is this display suitable for a dusty environment?
Yes. The NEMA 12 / IP52 enclosure protects against dust and splashing water in production and warehouse settings.
How do I connect the display to my system?
Via RS232 or RS485. With an Alpha Gateway interface you can also connect PLC networks such as Profibus or Modbus Plus.