1. Size:82.8mm X 53.4mm
2. Plate thickness: 1.6mm
3. Input voltage range: 5.5V - 12V
4. Power supply input terminal: 5V
5. Power supply voltage: on-board 5V and 3.3V regulator components, 9V external DC power
supply can be used, and the power supply has anti-reverse function.
6. Crystal frequency: 8MHZ, 9 times internal frequency of the chip, working frequency 72MHZ.
7. 2.5V reference, ultra-high precision, low temperature drift.
