Instructions: 1. Alarm mode: Install the battery; Open the lock and rotate the shackle by 180 degree and then press it, it will sound the Di ; Alarm mode is set successfully, in this mode, if an external force touches the lock body, the lock body emits a sharp and harsh alarm sound. 2. Normal mode: Turn the lock shackle back 180 degree again and press it, there is no Di sound; Normal mode is set successfully, No alarm will sound in this mode.
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