Her family installed a $7,000 sophisticated Jin Jin alarm system after a break-in in their three storey terraced house three years ago.
No break-in took place after that.
Good back-up service was Judy's priority in choosing an alarm system.
And Judy was full of praises when she talked about the back-up service provided by Jin Jin Alarm.
They are very efficient. They immediately called to check when a false alarm triggered it monitoring system a few weeks ago,: said Judy.
Every now and then, they will send security consultants and technicians to check the system," she added.
She also said," I feel that the money invested in the alarm and the monthly maintenance fee is worth it because we are all well-protected."
And Judy is very happy about the flexibility of the system. It has a central control system as well as individual controls for different parts of the house.
This allows the family to leave the infra-red detector at the front doors off but the whole house under protection when someone is coming home late.