Dahua Technology LE-L - Manual (Page 114)

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transmission only and its port shall be 123.The update interval ranges from 1 to 65535. Default
value is 10 minutes.
Figure 7-36
You can refer to the following sheet for time zone information.
City /Region Name Time Zone
London GMT+0
Berlin GMT+1
Cairo GMT+2
Moscow GMT+3
New Deli
GMT+5
Bangkok GMT+7
Beijing (Hong Kong)
GMT+8
Tokyo GMT+9
Sydney GMT+10
Hawaii GMT-10
Alaska GMT-9
Pacific Time(P.T)
GMT-8
American Mountain Time(M.T) GMT-7
American Central Time(C.T) GMT-6
American Eastern Time(E.T) GMT-5
Atlantic Time GMT-4
Brazil GMT-3
Middle Atlantic Time
GMT-2
Alarm Centre
Alarm centre interface is shown as below.