PCF8523 RTC Breakout Board Module Real Time Clock Assembled Breakout Boardwinder 3.3V 5V for Arduino Raspberry Pi

Descriptions: This is a great battery-backed real time clock (RTC) that allows your microcontroller project to keep track of time even if it is reprogrammed, or if the power is lost. Perfect for datalogging, clock-building, time stamping, timers and alarms, etc. Equipped with PCF8523 RTC - it can run from 3.3V or 5V power & logic! Works great for Arduino board using RTC library or with a Raspberry Pi (or similar single board linux computer) PCB & header are included Plugs into any breadboard, or you can use wires Two mounting holes Will keep time for 5 years or more Notes: This product does not come with a CR1220 coin cell battery. We recommend you purchase a coin cell battery to use with this product. The PCF8523 is simple and inexpensive but not a high precision device. It may lose or gain up to 2 seconds a day. For a high-precision, temperature compensated alternative, please check out the DS3231 precision RTC . Package included: 1 x PCF8523 RTC Breakout Board Module Real Time Clock Assembled Breakout Boardwinder 3.3V 5V for Arduino Raspberry Pi