![Don't have a burglar alarm? Your home insurance policy may be invalid | Home insurance | The Guardian Don't have a burglar alarm? Your home insurance policy may be invalid | Home insurance | The Guardian](https://i.guim.co.uk/img/media/00af93ad69c6b2b67da9a20be794827310eac3a8/0_908_2999_1800/2999.jpg?width=1200&height=630&quality=85&auto=format&fit=crop&overlay-align=bottom%2Cleft&overlay-width=100p&overlay-base64=L2ltZy9zdGF0aWMvb3ZlcmxheXMvdGctZGVmYXVsdC5wbmc&s=8aac1bbfbb04dcab67f49d35c747b991)
Don't have a burglar alarm? Your home insurance policy may be invalid | Home insurance | The Guardian
![Burglar alarm the suspect for hundred of mystery phone calls | Internet, phones & broadband | The Guardian Burglar alarm the suspect for hundred of mystery phone calls | Internet, phones & broadband | The Guardian](https://i.guim.co.uk/img/static/sys-images/Guardian/Pix/pictures/2014/1/8/1389201812285/Burglar-alarm-box-on-outs-006.jpg?width=1200&height=630&quality=85&auto=format&fit=crop&overlay-align=bottom%2Cleft&overlay-width=100p&overlay-base64=L2ltZy9zdGF0aWMvb3ZlcmxheXMvdG8tZGVmYXVsdC5wbmc&enable=upscale&s=229e416402cf1c3453a9006f04dd450c)
Burglar alarm the suspect for hundred of mystery phone calls | Internet, phones & broadband | The Guardian
![Wireless Home Security Alarm System DIY Kit - Magnetic Sensor - Guardian Protector - Window Glass Vibration Security Burglar Wireless Home Security Alarm System DIY Kit - Magnetic Sensor - Guardian Protector - Window Glass Vibration Security Burglar](https://m.media-amazon.com/images/I/519zcRpshjL._AC_SY355_.jpg)
Wireless Home Security Alarm System DIY Kit - Magnetic Sensor - Guardian Protector - Window Glass Vibration Security Burglar
![Wireless Home Security Alarm System DIY Kit - Magnetic Sensor - Guardian Protector - Window Glass Vibration Security Burglar Wireless Home Security Alarm System DIY Kit - Magnetic Sensor - Guardian Protector - Window Glass Vibration Security Burglar](https://m.media-amazon.com/images/I/51pc+6I3M3L.jpg)