Reference Guide for Environmental Property Management 2.6 Noise from Intruder Alarm System Noise from intruder alarm systems is controlled under the Noise Control Ordinance and is dealt with by the Police. To avoid causing noise nuisance, √ intruder alarm system installed in any premises shall not sound more than 15 minutes after being triggered √ intruder alarm system installed in any vehicle shall not sound more than 5 minutes after being triggered √ the vehicle alarms shall not sound unless the vehicle is physically being tampered with Penalty for the offence of noise nuisance caused by intruder alarm systems - Maximum fine HK$ 10,000.
