Features: High precise Clock module with ±2ppm accuracy ensures reliable timekeeping for years, backed by a battery for uninterrupted operation during power outages. Features I2C communication compatibility, compactly design, and shock resistant construction for seamlessly integration into diverse electronics projects. Ideal for electronics enthusiasts, engineers, and developers working on devices, embedded systems, or DIY automation platforms for Projects. Perfect for critical applications such as server time synchronization, intelligent home hubs, data loggers, and portable electronics requiring long terms stability. Design with industrial durability, this real time clock module minimizes calibration needs while maintaining synchronization across multiple device effortlessly. Specifications: Component:Plastic Size:Approx.1.52x1.3x1.9cm/0.6x0.51x0.75inch Timing Accuracy in ±5ppm(±0.432Sec/Day) To Provide Continuous Battery Backup Low Power Consumption The Device Is Compatible for Encapsulation and Function Complete the Clock Calendar Function Including the Second, Minutes, Output of 1Hz and 32.768Khz Reset the Output and Input Button to Vibrate High Speed (400Khz) Serial I2cBus +2.3V to +5.5V Supply Voltages The Accuracy of ±3°c Digital Temperature Sensors - 40°c to +85°c Temperature ranges Package Includes: 1pc Clock Module note: Please allow 1-10mm errors due to manual measurement. Due to the differences between different monitors, the picture may not reflect the actual item color.