User manual for the LR050AR/A series industrial color LCD display by Longrich, covering specifications, installation, wiring and commands.
This manual provides hardware and software information for the LR050AR/A series industrial color LCD display, including performance parameters, interface definitions, connection methods, command details and application examples. It is intended to help users operate the display correctly and safely.
The document also contains mechanical structure details, after‑sale support instructions, handling of transport damage, storage guidelines, safety precautions and a coding scheme for product identification. This manual is written in Chinese.
| Screen diagonal | 5.0 inches |
|---|---|
| LCD type | TFT |
| Dimensions (W×H×D) | 133×91.40×22.30 mm |
| Resolution | 320×234 pixels |
| Interface | Serial (RS232/RS485) and parallel |
| Colors | 8/256 colors (true‑color TFT) |
| Viewing angle | Left/Right 50°, Top 15°, Bottom 35° |
| Working voltage | 12 V ± 2 V DC |
| Power consumption (on) | 360 mA @ 12 V |
| Power consumption (backlight off) | 140 mA @ 12 V |
| Operating temperature | -20 °C ~ +70 °C |
| Storage temperature | -30 °C ~ +80 °C |
| Brightness | 400 cd/m² |
| Contrast ratio | 350:1 |
| LCD lifetime | >50 000 h continuous |
| Backlight type | CCF L/LED |
| Backlight lifetime | 25 000 ~ 100 000 h continuous |
The display is designed for embedded installation using a 20‑pin socket.
Use the SW1 dip‑switches; only one of RS232 or RS485 can be enabled at a time.
The whole unit consumes 360 mA at 12 V.
It operates from –20 °C to +70 °C.