Talos Security GRGL400 DVR Manual - Manual (Page 25)

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▪ SIGNAL: Select on/off to use alarm by channel.
▪ ALARM SET: Check the alarm connection to ensure it is working properly.
Press the [SET] button then alarm device will be activated.
▪ ALARM CLEAR: Press the [CLEAR] button then alarm will be cleared.
[HDD] - When HDD is selected under [TYPE], HDD information will be displayed.
[INSTALL] - Formats HDD.
5.1.2 ALARM OUT
5.1.3 DISK