6. Sound signaling
Pressing any key on the keyboard is signaled by a short
beep.
Each successful operation, both programming and
control, is signaled by a quick four-beep.
An unsuccessful operation is signaled by a long double
beep.
The time for entering the next character on the keyboard
is 5 seconds. After this time, the input data error is
signaled by a double long beep.
In the case of the active protection against repeated
pressing, during the minute lock, each press of the button
is signaled by a single long beep.
7. The function of protection against repeatedly
entering incorrect code
In order to protect the device against attempts of
unauthorized use, it is possible to enable protection
against repeatedly entering an incorrect code. If the
function is switched on, then after entering an incorrect
code three times, the keypad lock is activated for one
minute. Each key press on the keyboard while the lock is
active is signaled with a long beep after each key press.
Identifying codes and administrative functions are
unavailable during this period.
