Without the pair, an interval of five seconds duration issued by "pairing". Until two minutes after the pairing was successful until the prompt within 2 minutes.
If there is no pairing within 2 minutes, the interval of 5 seconds will continue to emit "fairing" until the pairing prompt is successful after 2 minutes.
If there is no pairing within 2 minutes, the "pairing" will be issued continuously every 5 seconds until the pairing prompt is successful after 2 minutes.