Precision of digital temperature sensor is ¡À3¡ãC Upgraded my DS3231 RTC to display on the MAX7219 matrix module. | Noppharat Tawanron High Precision RTC Module 5 Pack Treedix 2PCS DS3231 High Precision RTC Real Time Clock Module Memory Module RTC Adapted To 3.3V DS3231 Sensor Product Features: Timing accuracy (in a plus or minus): ± 5ppm (± 0.432 sec / day) Power supply voltage: 2.3V to 5.5V ±3℃ accuracy digital... Reset output and anti-shake inpu DS3231 RTC Precision Real Time Clock Description: The module itself can adapt to 3., 3V and 5V system, no need for level conversion, which is super convenient; Provide continuous timing battery backup; Complete clock calendar function includes second, minute, time, week, date, month, and year, and provide leap year?compensation until 2100;? Low power consumption; Two calendar clock; Reset output and anti-shake input; Specification During -40 ¡ãC to + 85 ¡ã C temperature range, timing accuracy is ¡À5 PPM (¡À0., 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 ¡À3¡ãC; Connection diagram: Pls refer to the last photo in above photo window.