The Wireless Alarm we normally install in your home is set when you leave, if an intrusion is detected it will activate and the sounder will ring for 5 minutes, unless entry is made through the correct entry route and the deactivation code entered within 25 seconds. It can be part set when you go to bed so that the downstairs only will activate. We can link it to our monitoring station so that the key holders and emergency services are alerted upon activation. For pricing we can either come along and do a survey or you can use our quote builder and purchase online.