Product Review

Instructions Link:
http:wiki.52pi.com/index.php/BAT_RTC%28English%29

Functio overview:
RTC modules is used to save time, record the data, this module use farad capacitance, which is higher cost performance.
Yes, this is the upgrade version of the RPI RTC module with farad capacitor.

Product features：
The RTC module is specifically designed for Raspberry Pi.
It communicated with Raspberry Pi through I2C Interface.
This module is suitable for the power to save time, record the data
Set a serial port, TTL convenient way online debugging
I2C communication, simple configuration
There is a Maxim DS1307 and CR1220 button cell on the board to keep the real time for a long time after the Raspberry Pi has it's power down.
Makerfire group is focus on RPI peripherals.There are many RPI Add-o available in Amazon.Your could use the keyword Makerfire RPI to find.Below are the add-o provided by us.

RPI RTC module
Model B or B+ T-Cobber GPIO interface board
RPI L298N motor driver board
RPI 232 UART shield
Model B or B+ 3-row GPIO extended board
Model B or B+ 3-row Prototype board
RPI B+ to B GPIO Convertor board
RPI Temperature Seor Module

Package Including
1 * Raspberry Pi RTC Module
1 * Coin battery