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X728-hardware
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10:38, 23 September 2021
→Pins and GPIO used
| 31 || GPIO6 for AC power loss detection (Jumper for PLD inserted, High=power loss,Low=Power supply normal)
|-
|
38 || GPIO20 for buzzer control
<span style="color:red;">
38 || GPIO20 for buzzer control
(NEW Add on V2.1 only)</span>
|}
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