Adafruit PiRTC - Precise DS3231 Real Time Clock for Raspberry Pi

The Adafruit PiRTC is the best battery-backed real time clock (RTC) designed for Raspberry Pi projects to keep accurate time even if power is lost. It is perfect for applications such as data-logging, clock-building, NTP servers, time-stamping, timers, and alarms.

Equipped with a genuine DS3231 RTC chip, it offers extreme accuracy with temperature compensation to minimize drift. The RTC chip includes an integrated crystal and temperature sensor to ensure precise timekeeping.

Features include:

• Fully assembled & tested PCB that plugs directly into your Raspberry Pi's GPIO pins with no soldering required.
• Five years or more of battery-backed timekeeping (battery not included).
• Compatible with all Raspberry Pi models including Pi 1, Pi 2, Pi 3, Pi 4, Pi Zero, A+, B+, etc.
• Genuine Maxim DS3231 RTC chip for reliable, calibrated timekeeping.

Note: The product does not include the CR1220 coin cell battery, which is recommended for use and available separately.

Product Dimensions: 21.3mm x 20.0mm x 13.6mm

Product Weight: 2.7g