Description
The PCF8523 is a simple, low cost, real time clock (RTC) chip. Unlike the fancier (and much more expensive) RTCs out there, this chip is not temperature compensated and may lose or gain up to 2 seconds a day. If you need a more accurate RTC we do recommend looking at the DS3231 instead.
Please Note: This breakout uses a CR1220 battery. Due to shipping regulations, a battery is not included