Real-Time Clock (RTC) DS3231 Module from Japan
Precision timekeeping module with DS3231 IC, EEPROM, crystal oscillator, and I2C interface for accurate date/time tracking. HTS 8543.90.88 classification as other electrical machine parts for timing functions, independent of watches. Includes backup battery holder for power loss protection.
Duty Rate — Japan → United States
12.5%
Rate breakdown
9903.05.4912.5%Except for products described in headings 9903.05.85–9903.05.92, articles the product of Japan, with an ad valorem (or ad valorem equivalent) rate of duty under column 1 less than 12.5 percent, as provided for in U.S. note 52 to this subchapter
Import Tips
• Specify temperature-compensated crystal oscillator accuracy
• Include battery type and lifespan in specifications
• Test I2C address conflicts before bulk import