TM1637 4-Digit 7-Segment Display Module – 0.36 inch, I2C, 3.3-5.5V, Red

The TM1637 4-digit 7-segment display module provides a compact, low-cost way to add numerical readouts to Arduino, Raspberry Pi, and other microcontroller projects using only two signal lines. It integrates a 0.36-inch four-digit common-anode LED display and a TM1637 driver IC on a single 42 × 24 × 12 mm board, so the usual twelve multiplexed pins are reduced to four: VCC, GND, DIO, and CLK. The module operates from 3.3V to 5.5V and draws approximately 80 mA at 5V, with a control interface that is compatible with both 3.3V and 5V logic. The TM1637 chip handles LED high-voltage driving, data latching, and keyboard scanning internally, and communication uses an I2C-like two-wire protocol implemented in software. Adjustable brightness and a central clock colon make the display suitable for time, temperature, voltage, current, and counter readouts. Four M2 mounting holes (2.2 mm aperture) simplify panel installation, and libraries are widely available for Arduino and other platforms. Typical uses include digital clocks, thermometers, power-supply monitors, controller status displays, and educational projects. This TM1637 display module is a practical choice when a readable four-digit numeric indicator is needed with minimal pin usage.

1. Digital clocks and time displays with colon separation.
2. Thermometers and temperature monitoring readouts.
3. Voltage and current displays for power supplies.
4. Controller status and counter indicators.
5. Arduino, Raspberry Pi, and microcontroller learning projects.
6. Household appliance and instrument panel displays.

1. Model: 4DIG-7SEGMENT (TM1637 module).
2. Display type: 4-digit 7-segment LED, common anode.
3. Digit height: 0.36 inch.
4. Display colour: red.
5. Driver IC: TM1637.
6. Operating voltage: 3.3V to 5.5V DC.
7. Current at 5V: approximately 80 mA.
8. Control interface level: 3.3V or 5V compatible.
9. Communication: I2C-like two-wire protocol (DIO and CLK).
10. Pin count: 4 (VCC, GND, DIO, CLK).
11. Dimensions: 42 × 24 × 12 mm.
12. Mounting: 4 × M2 holes, 2.2 mm aperture.
13. Clock colon: central colon for time display.
14. Brightness: adjustable via software.