KnTech KNEx Series, Руководство пользователя

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10.2.5 Time Setting
10.2.6 Language Setting
Maximum calling time: 20---600 sec
The called remote DTMF password: 789 (password "789" needs to be
set in the left column door control menu), when the phone is called
automatically, the other party enters the password "789", the dry contact
output high or low level action.