HiLetgo 5pcs DS3231 AT24C32 Clock Module Real Time Clock Module IIC RTC Module for Arduino Without Battery auspowers_batchone 4 pin dupont connector of

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HiLetgo 5pcs DS3231 AT24C32 Clock Module Real Time Clock Module IIC RTC Module for Arduino Without Battery auspowers_batchone 4 pin dupont connector ofHiLetgo 5pcs DS3231 AT24C32 Clock Module Real Time Clock Module IIC RTC Module for Arduino Without Battery DS3231 AT24C32 Clock Module Real Time Clock Module IIC RTC Module for Arduino Parameters: 1. Dimension: 38mm 22mm 14mm 2. Weight:. 8g 3. Working voltage : 3. 3 . 5 . 5 V 4. Clock chip: high precision clock chip DS3231 5. Clock accuracy within range : 0 40 , accuracy 2ppm, about 1 minute in error 6. Programmable square wave output 7. Real time