SMS0401 is a standard digital pen segment LCD display module, which can display 4 digits, wide voltage working range, low power consumption, and is connected with MCU single chip microcomputer by two-wire serial port, which is widely used in hand-held instruments and smart display instruments.
The SMS0401 LCD module from Sunman displays four numeric digits (including a decimal point) and is designed for portable devices and smart meters. It operates over a wide voltage range and consumes low power, making it suitable for battery‑powered applications.
The module uses a two‑wire serial interface for communication with a microcontroller, offers a 120° viewing angle, and is built as a reflective display. Mechanical specifications, pin mapping, and electrical parameters are provided for integration into designs. This manual is written in Chinese.
| Display capacity | 4 digits with decimal point |
|---|---|
| Operating voltage | 2.7~5.5 V |
| Operating current | 20 mA at 3.0 V, 300 µA at 5.0 V |
| Viewing angle | ≈120° |
| Interface type | Two‑wire serial interface |
The SMS0401 operates from 2.7 V to 5.5 V.
It can display four numeric digits, including a decimal point.
The module uses a two‑wire serial interface for communication with a microcontroller.
The LCD provides a viewing angle of about 120 degrees.