① ②
5. Battery Low Voltage Protection
When the AA batteries are running low, the deadbolt’s low-voltage alarm signals users to change the batteries as
follows:
1. When the battery voltage reaches lower than 4.8V, the alarm buzzer will make a short sharp sound five
times. Users can unlock the deadbolt normally but will not be able to enter the administrative user mode.
2. When the battery voltage reaches lower than 4.5V, the alarm buzzer will make a short sharp sound five
times, and then the deadbolt will power off
Note: When the low-voltage alarm occurs, please change the batteries immediately to help prevent
data loss (It is suggested to change the batteries immediately when the battery voltage is lower than 4.8V).
2. Precautions
(1). After the deadbolt lock is installed, the deadbolt is in the “test state”, and therefore any
fingerprints and PIN codes can open the deadbolt lock. Therefore, you must first change the Master
Pass Code (MPC). The deadbolt can be used normally only after an “Administrator User” is enrolled. If
the MPC is not changed, none of the functions in the deadbolt (except deadbolt initialization) are
available. If no “Administrator User” is registered, “Ordinary Users”cannot be enrolled, either.
Note: For instructions on how to change the Master Pass Code, Enroll Administrator User or Enroll
Ordinary User, please see BL100 Fingerprint Deadbolt User Manual.
(2). Do not remove batteries when matching, enrolling or deleting fingerprints because the sudden
power-loss may result in data loss of fingerprint templates. Prior to removing batteries, make sure the
deadbolt is not being operated.
(3). It is recommended to replace the deadbolt batteries at least once every six months to avoid
damaging the deadbolt’s electronics due to the battery corrosion. Do not use poor-quality batteries.
3. LED Backlight Indicators
The LED Backlight Indicators contain three colors: Red, Green and Blue.
The general rule:
Successful user operation: The buzzer sounds once and the LED indicator will turn green for 3 seconds.
Failed user operation: The buzzer sounds short tone twice and the LED indicator turns red for 3 seconds.
Verify State: LED flashes Green.
Management Mode: Blue LED will turn on and green LED will turn off.
Warning Indication: The buzzer beeps five times intermittently.
4. Unlock with an Emergency Mechanical Key
You can open the door using an emergency mechanical key in case the electronic component does not
operate.
①Use your fingernails or a hard chip to remove the lock cover.
②Insert the key into the keyhole and rotate 90º to unlock.