while the battery changing period has expired and the dose not work
anymore with the internal battery, you can make contact with 9V rectangular
battery at the external emergency power supply terminal and open it by entering secret code
or touching digital key.
•
How to set volume control
press the register button-------number4(volume down),5(volume intertone) or 6(volume
high)---------press the register button
•
How to set duoble lock
*inside-------use the double lock switch
*outside------press the *button for 5second
CALL CENTER: 089-‐026-‐8549
