ESTINK RTC Clock Module Practical Stable 3.3 V System High DS3231 Module 5 V System For - 40~85℃ Low Power Consumption 4 Pcs /set Raspberry Pi

Features: -40 ° C to +85 ° C temperature range timing accuracy kept at ± 5ppm (± 0.432 sec / day) The module itself can be adapted to 3.3 V and 5 V system Complete clock calendar functions include seconds minutes hours day date month and year timing provide valid until the year 2100 leap year compensation 1 Hz and 32.768 kHz output RTC Clock Module has the characteristic of low power consumption Accuracy of ±3℃ digital temperature sensor Specifications: Model: DS3231 Temperature range: - 40~85℃ Weight: 2g Package included: 4 x RTC Clock Module( battery are included)