Alpha 4120C three-colour indoor LED display
The Alpha 4120C is a three-colour indoor LED display with a 91.4 x 12.2 cm screen (matrix 120 x 16 pixels). It shows text and simple graphics in red, green or amber on one or two lines, with a character height up to 12.2 cm. Legacy, 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 Alpha 4120C shows 12 characters on one line or 20 characters on two lines (120 x 16 pixels). Control is via RS232 or RS485 (up to 255 displays on one network); programming is done with the handheld Eurostyle IR remote or with Alpha software.
The Alpha 4120C is also available as a 4120CR version with super-bright red LEDs only, clearly legible in bright ambient light.
The Alpha 4120C is a legacy model and no longer available new. For new projects the full colour Alpha 4120 RGB is the current alternative. Daylight maintains and replaces existing units throughout Europe.
Product information Alpha 4120C
Display
| Display matrix | 120 x 16 pixels |
|---|---|
| Display size | 91.4 x 12.2 cm |
| Character height | 12.2 cm (4.8") on 1 line / 5.3 cm (2.1") on 2 lines |
| Characters per line | 12 (1 line) / 20 (2 lines) |
| Colour | red, green or amber (3 colours) + 3 rainbow effects; the R version is super-bright red only |
| Number of lines | 1 or 2 |
| Fonts | 5 |
| Pixel size | 0.5 cm (0.2") |
| Pixel pitch | 0.8 cm (0.3") |
Housing and mounting
| Dimensions (WxDxH, with power supply) | 101.9 x 14.0 x 19.6 cm |
|---|---|
| Weight | 8.4 kg |
| Housing material | extruded aluminium |
| Protection rating | no NEMA rating (standard); optional NEMA 12 |
| Mounting | ceiling or wall mounting |
Control, power and general
| Memory | 28,000 characters |
|---|---|
| Message capacity | 96 messages |
| Real-time clock | yes (retains time up to ~30 days without power) |
| Interface | RS232 + RS485 (multidrop up to 255 displays); options wireless or Ethernet LAN |
| Programming | handheld Eurostyle IR remote or Alpha software (up to 9 m) |
| Power | 120 / 230 VAC ±10%, max. 180 W (R version 120 W) |
| Power cord | 3 m (10 ft) |
| Character set | international (block, decorative, narrow, wide, double-wide) |
| Certifications | ETL/ETLc, FCC Part 15 Class A |
| Operating temperature | 0-50 °C (32-120 °F) |
| Humidity | 0-95% non-condensing |
| Warranty | see Daylight bv sales conditions |
Frequently asked questions
Which colours does the Alpha 4120C show?
Each dot can show red, green or amber (three-colour), plus three rainbow effects. The R version is super-bright red only.
How do I control the Alpha 4120C?
Via RS232 or RS485; up to 255 displays on one network. Programming is done with the IR remote or with Alpha software. Wireless and Ethernet LAN are optional.
Is the Alpha 4120C still available?
No, this model is discontinued. The current alternative is the full colour Alpha 4120 RGB. Daylight maintains and replaces existing units throughout Europe.