4-point clock display module, digital (0.36 inches) driver IC TM1637.
Module Features:
Control interface for 5V or 3.3V
M2 screws for easy installation
4 digital display interface modules
Management interface: a total of four pins (GND, VCC, DIO, CLK), GND to ground, VCC is the power source, DIO data input and pin output, CLK pin synchronization signal;
Hole positioning: 4 M2 positioning screws The hole diameter is 2.2 mm, the positioning module is easy to install, to achieve inter-combination module.
Cost: ~ 44