DS1302 Timer RTC Module

Real-Time Clock (RTC): The DS1302 module can accurately keep track of time in hours, minutes, seconds, and dates (day, month, year). It provides reliable timekeeping even in the absence of power, thanks to its built-in backup battery.

Battery Backup: The module typically includes a coin cell battery holder (e.g., CR2032) to maintain timekeeping when the primary power source is disconnected.

Digital Interface: It communicates with microcontrollers and other digital devices using a simple 3-wire interface (Data, Clock, and Reset), making it easy to interface with popular platforms like Arduino.

Serial Communication: The DS1302 module supports serial communication using a well-defined protocol, allowing for easy configuration and reading of time and date information.

Adjustable Clock Frequency: Some modules allow for clock frequency adjustment, which can be useful for fine-tuning the timekeeping accuracy.

Timer Functionality: In addition to clock functions, the DS1302 can be used as a timer or countdown timer. It can trigger external events or alarms when a preset time is reached.

Low Power Consumption: The DS1302 is designed for low power consumption, making it suitable for battery-powered applications.