diasmelvyn

i have a AVTECH 761 dvr . when there is a power loss , the date changes to jan 2001 and time starts from 0 hours. this date remains so till next reboot due to power loss and changes again. what is the solution. also let me know if there is abattery like cmos battery.

what kind of speakers do we connect to hikvision 7300 series dvr to hear the audio . can we use computer speakers .i have used a audio chip microphone . please help

thank you , ill give it a try for the date problem