Adafruit PiRTC - PCF8523 Real Time Clock for Raspberry Pi

Key Features

• Perfect for data-logging, clock-building, time-stamping, timers and alarms, etc
• Equipped withKEY_TAB PCF8523KEY_TAB RTC
• Works with anyKEY_TAB Raspberry Pi (or similar single board linux computer)KEY_TAB including the Pi 1, Pi 2, Pi 3, Pi Zero, A+, B+, Pi 4, etc.
• Fully assembled & tested PCB plugs directly into your Pi's GPIO pins -KEY_TAB No soldering required!
• Will keep time for 5 years or more

This is a great battery-backed real time clock (RTC) that allows your Raspberry Pi project to keep track of time if the power is lost. Perfect for data-logging, clock-building, time-stamping, timers and alarms, etc. Equipped withKEY_TAB PCF8523KEY_TAB RTC, it works great with the Raspberry Pi and has native kernel support.

Item Specifics
1 - RTC Board
Size: 21mm x 20mm x 12mm
Weight: 2.2g
CR1220 coin cell battery NOT included
Note: Not a high precision device. Could lose/gain 1-2 seconds per day.