1.Support 64GB and 128GB card.
MD31 can support 64GB or 128GB card. If you fail, please format your card to Fat32 by tool(Operate Guide, Please Click Here !! ).

2.Indicator light status

StatusDescription
Blue light is onThe device is in the ready state
Blue light flashes twiceThe device enters the recording process
Red light flashesThe device enters the PIR recording process
Red and blue lights flash alternatelyUnplugged or unread card
Red and blue lights flash twice at the same timeThe device saves the recording and enters the shutdown process