Product Review

Specification:Size: 38 x 22 x 14mmWeight: 8gTemperature accuracy: 3 CMaximum transmission speed: 400KHz (working voltage of 5V) Feature:Low-cost, accurate I2C real-time clock (RTC) module with a temperature-compensated crystal oscillator (TCXO) improving long-term accuracyPrecise temperature sensor, through the I2C interface for accessRechargeable battery LIR2032, maintaining accurate timekeeping without main powerAutomatically adjusted including corrections for leap yearCalendar alarm clock with two programmable square-wave outputGenerating seconds, minutes, hours, day, month and year timing till 2100Cascaded with other IIC device, 24C32 addresses can be shorted A0/A1/A2 modify default address is 0x57Rechargeable battery LIR2032, preventing the system from power failure Wiring instructions (with Arduino uno r3 for example):SCL?A5SDA?A4VCC?5VGND?GND Package included:1x DS3231 AT24C32 IIC module