How force a full reset of S3 GSM Alarm

[admin]

Model: LMS3, LMS3D

If the users forget password, to restore the device need to use
Forced Restore.

Steps are
Turn off the back-up battery switch and AC power
Press and hold RESET button at the back while turn on the
power
Keep press and hold the RESET button for about 5 seconds
until the buzzer gives one long “Beep” and all LED flash in
sequence, then release RESET button, all setting deleted,
phone number deleted, password return to 1234, all remote
control and sensors deleted, alarm panel fully returned to
factory setting.