Reolink 4CH User Manual page 15

Setup Wizard : System Time
NTP Server: The server you'd like to use for NTP. They're all quite comparable in terms of reliability and
accuracy, so unless you've got some kind of master plan for world domination (which is affected by the
time, for some reason) then the default (pool. ntp.org) works fine.
NTP Port: The default is 123. You should only change this if you're using a different NTP server, and you
know they use a different port. If you're using pool.ntp.org, ensure the port is 123.
Sync: Triggers the NVR to automatically synchronize its internal clock with the time server immediately. If
your NVR is connected to the Internet and the network is correctly configured, this will update almost
instantly.
System Time: The NVR's current date and time.
Note: Make sure your time offset is set correctly or both your NVRs normal time and DST time may be out.
DST
Offset: The amount by which the time changes during DST. For the vast majority of locations, the offset is
one hour, but
exceptions to this rule exist.
Start Time / End Time: When DST begins and ends in your locale.
NTP stands for "Network Time
Protocol". It's a way for the
NVR to connect to the Internet
and automatically update and
maintain accurate time.
There's no requirement to use
NTP, but it's easy to setup and
free to use, so there's really no
reason not to.
If your time zone
observes daylight saving
time and you want your
NVR's clock to be
updated automatically
when daylight saving
time starts and ends,
make sure the Enable
checkbox is selected.
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