3X 3.3V/5V DS3231 High Precision Real Time Clock Module for

Reset output and anti-shake input Specification During -40 Degrees Celsius to + 85 Degrees Celsius temperature range timing accuracy is +/-5 PPM (+/-0.432sec/day). 1 Hz and 32.768 kHz output High speed (400 KHZ)I2C serial bus +2.3 V to + 5.5V power supply voltage Precision of digital temperature sensor is +/-3Degrees Celsius size:2.0*1.2CM/0.79*0.47 inch mateiral:CCL colour:BLACK packing: 3 * RTC Real Time Clock Module Only the above package content other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.