Core Chip: Utilizes DS3231 IC – a highly accurate, temperature-compensated real-time clock.

Operating Voltage: 3.3V to 5V DC – compatible with Arduino, Raspberry Pi, ESP32, and other microcontrollers.

Timekeeping Accuracy: ±2 minutes per year thanks to onboard temperature compensation.

Battery Backup: Includes a CR2032 coin cell battery holder for maintaining time during power outages.

Communication Interface: I2C interface with standard 7-bit address 0x68 for easy microcontroller integration.

Features:

Tracks seconds, minutes, hours, day, date, month, and year with leap year compensation.

Programmable square-wave output.

Alarm function with interrupt output.

Compact Design: Small PCB with onboard crystal and battery holder.