DFRobot Gravity I2C SD2405 RTC module

The Gravity I2C SD2405 RTC module from DFRobot is a high-precision real-time clock (RTC) that communicates via an I2C interface. With a built-in rechargeable battery and crystal compensation, this module provides reliable timekeeping for various applications. It features a dual power supply system that automatically switches between the primary power supply and the battery to ensure continuous functionality. With a low power consumption of just 1µA, the RTC can operate for several years without external power. The module allows for the programming of alarm interrupts and offers an adjustable clock output that can be used for external microcontrollers. With a 12-byte SRAM, the Gravity SD2405 RTC module is ideal for projects requiring precise time measurement, such as data loggers or timer alarms.

• Integrated rechargeable battery for long-term use without external power supply
• Automatic switch between primary power supply and battery during power outages
• Programmable alarm interrupts for flexible time control
• Adjustable clock output from 1Hz to 32.768kHz for external applications
• Low power consumption of just 1µA for a long RTC lifespan.