Esse-ti GSM400, Руководство пользователя

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BATTERY CHECK
If the low-battery check is enabled, GSM400 checks the battery status
every second. When the charge goes below the previously-programmed
threshold ensuring the minimum number of operating hours in idle mode,
a notification SMS is sent to the programmed telephone number (see
“Setting telephone number for notification service”). The device sends
out one notification SMS only. A new SMS will be sent out if the charge
status rises and goes again below the previously-set threshold. The SMS
text is the following: “
Batteria scarica ” (Low battery).
The low-battery check is only available on models: GC and DATA.
The built-in backup batteries ensure 8 operating hours in idle mode and 1
operating hour in conversation mode.
Factory default : disabled.
Enabling
It allows to activate the low-battery check.
Enabling
(confirm)

Lift the handset and dial: **50.

Dial # to confirm.

After the confirmation tone hang up or carry on with other
programmings.