SMS0403B LCD display module is a standard digital pen type LCD display module, which can display 4 digits and 4 sets of prompts, used to display time, wide voltage working range, low power consumption, with MCU single chip microcomputer using two-wire serial port connection, widely used in handheld instruments and intelligent display instruments.
The SMS0403B is a standard digital LCD display module that can show four numeric digits and four indicator symbols. It operates with low power consumption and is suitable for portable devices, smart meters, and other embedded applications.
The module uses a 2‑wire serial interface to communicate with an MCU, and its physical dimensions and character mapping table are provided for integration. Key environmental specifications such as operating voltage, temperature range, and humidity limits are also listed. This manual is written in Chinese.
| Display capacity | 4 digits + 4 indicator symbols |
|---|---|
| Operating voltage | 2.7‑5.5 V |
| Operating current | 20 µA (3.0 MΩ), 300 µA (5.0 MΩ) |
| Character height | 12.0 nm |
| Relative humidity | <85 % |
| Operating temperature | -10 °C to +50 °C |
| Display type | Reflective |
| Storage temperature | -20 °C to +60 °C |
| Interface | 2‑wire serial |
The module operates from 2.7 V to 5.5 V.
It can display four numeric digits and four indicator symbols.
The module uses a 2‑wire serial interface.
The module works from –10 °C to +50 °C.