This is an intruder alarm with a siren and a motion sensor and a switch, this alarm is powered from both ac and dc or from umeme power and buck up it has a motion sensor that detects an intruder and has a very loud sound noise that is used to prevent intruders from coming near the house by using sound to disrupt and chase him away it can be switched on automatically or manually by switch. when an intruder comes in the range of view this alarm will make a high sound alarm for a few minutes until when he goes away and this helps to notify the intruder that their is an intruder in his premises