32.768 kHz Crystal + 20pF - RTC Watch Crystal pulse sensor This Mifare-One NFC tag can

This Mifare-One NFC tag can be read by almost any 13

and sensor age

You still need a 3 to 5VDC power supply

Compact size: 170 × 115 mm

The device compatible with DS3231 encapsulation and function

32.768 kHz Crystal + 20pF - RTC Watch Crystal pulse sensor This Mifare-One NFC tag can32. 768 KHz Crystal with 20pF Capacitor Load The 32. 768 KHz Crystal (20pF load) is the standard timekeeper crystal used in real time clocks (RTCs), watches, and microcontrollers that need accurate timekeeping. The frequency 32,768 Hz is exactly 215, which divides evenly down to 1 Hz making it perfect for counting seconds. Technical specifications Frequency 32. 768 KHz Load capacitance 20 pF Use RTC oscillator, timekeeping