DS3231 Precision RTC Module

The TechBox DS3231 Precision Real Time Clock Module is an extremely accurate I2C-Integrated RTC/TCXO/Crystal. This Real Time Clock (RTC) is the most precise time keeping you can get in a small and low power package. This breakout board is breadboard-friendly and accepts a CR2032 coin cell battery. With the battery in place, the RTC will keep time accurately for years without ever being connected to power! It is one of the best ways to get started with learning how to interact with Arduino peripherals. Features Can be connected directly to the microcontroller IO ports Standard 2.54 mm pins for input and output connections Two calendars and alarm clock Two programmable square-wave outputs Real time clock generator for seconds, minutes, hours, day, date, month, and year timing Valid until 2100 with leap year compensation Can be cascaded with other I2C devices The address can be set using the pins A0/A1/A2 (the default address is 0x57) Battery socket compatible with LIR2032 batteries I2C interface Specifications Operating voltage: 3.3 V to 5.5 V Real-time clock chip: DS3231 Clock accuracy: 2 ppm Memory chip: AT24C32 (32 Kb storage capacity) On-chip temperature sensor with an accuracy of ±3 ℃ I2C bus interface maximum speed: 400 kHz Size: 38 x 22 x 14 mm In the Box: DS3231 AT24C32 IIC Precision RTC Module CR2032 Coin Cell Battery   The DS3231 RTC does not require any soldering and is recommended for beginners ages 12 and up who are looking to get started with Arduino peripherals.  Product Dimensions: 3.14"L x 2.36"W x 1.18"D (80x60x30mm) Product Weight: 1.24 Oz. (35g)