QUOTE(sw.boutique @ Dec 5 2013, 08:42 PM)
Will alarm with infrared sensor help?
Forget about door bell. Nowadays due to what i said no one want to install doorbell. Imagine you are in condo. Tingtong, noone home, they get in wait for you at the kitchen. When you come home they jump on you with a parang. Money, sex or life....It could be all of it...if you have no money. Not what I say, everyone think so.
So, how? no door bell? Today unlike yesterday your mobile phone is the door bell la.

No need for door bell. How often people visit you? Once a month? Once a year?
Prevention is better than cure. Besides no door bell, just buy a dummy big to be seen camera at the door front as though you have a state of art cctv alram system. They choose another unit/house instead of yours. Similarly if your car has a visible steering lock at your parked car steering, they dont bother about your car. There are so many other cars.
Unless they know you are so rich and got so much money at home, once they target you are finished!!!! They cut wire to your alram, they take your recorder for the cctv...etc