one sensor aint cheap if you buy a good one. 400-700 RM but for example my house to secure the entire outside parameters all around i only need 5 sensors plus one for the roof. that's alot less than installing one contact for every window (in my case 30) and shatter sensors (another 40). you do the maths - for 70 sensors even if i spend 10x the price for one single (and possible easy to temper sensor) for one real good PIR i am still better off and i have less possible faults to deal with.

Everything have its pros and cons.

For me grill are more practical because I keep the door and windows open when at home. Only hot day will switch on the ac. And usually when away I still leave the windows open slightly to make sure my house don't get so hot when we came back.

My neighbor don't have grill, she always keep the door shut and sliding windows close. Maybe she prefer running ac everyday.

A good motion sensor will come with infrared this will reduce the false alarm when wind blow to curtain or small pets moving.

Think your house don't have dog living inside right? If have dog especially mid to large size motion sensor will always give false alarm.

This post has been edited by weikee: Sep 8 2013, 05:23 PM

Thanks bro... if you found it may forward that email to me at noone_826@hotmail.com

Thousand of thanks

It very subjective.. me myself, even with grill, i always shuts my doors n windows. Privacy ma.. dont want my neighbour to see me with only boxer.. he3..

Some people like tc they dislike grill coz feel like living in prison. You in other hand like grill, maybe for extra safety. Yeah grill + vibration sensor is d cheapest option. But doesnt always be d best.

Speaking about ventilation. This thread is not meant for it. So better not to discuss it here.

Nowdays there are motion sensors that can difrentiate human n pets. Tech are elvoving bro..

This post has been edited by platinum_12: Sep 8 2013, 10:38 PM

My friend doing alarm, I do get updated of Tech and new stuff.. Bigger dogs are not so easy to differentiate.

TS asking Grill or no Grill, I give TS advantage and disadvantage including air ventilation.

And BTW, some motion sensor is not hard to trick for a well trained thief.

I agreed with weikee, there's many considerations for one to weigh their priority over the pro and cons on each factor before they could come up with the decision whether to have it grill or no grill. To have ventilation without sacrificing the security is defintely one of the consideration.

actually even a pet is not a problem. i use paradox DG series with pet immunity. you can set the size of the animal up to 20kg if not mistaken. the sensor can judge very well. we have a family of musangs who likes to come and steal my mangos. in the beginning a lot of false alarms (the adults is big) but after some finetuning no more issues.

but yes you need a good digital sensor. i think most of my sensors (i use barrier beams and PIR) are 600+ per sensor. but well worth it.

Alamak bro.. talking about well train theif, Not to mention motion sensor. Even banks they can rob. Vibration sensor is d easiest to defeat. Oxy torch, cut thru anything without any vibration.

This post has been edited by platinum_12: Sep 10 2013, 07:41 PM

Well train as in train in alarm industry.

Wah.. 2 of ur sensors can pay my alarm cost for the whole house. Making me wondering. U might be a JUSA in real.

whole house 1200 bucks? how many sensors? how do you expect something that can prevent break-in? i think my alarm system total price almost 5k all-in. but ever since installed never really had any issues at all. just had to do some finetuning and thats it.

Good things not cheap.

If got time and a DIYer, try build own Alarm system. Now I am looking at Raspberry Pi, since I have few of these Pi.. Can have up to 17 Zone

https://sites.google.com/site/gadjetnut/hom...-system-project

http://homealarmpluspi.blogspot.com/

PJusa ... may I know what type of barrier beams you are using? I am using boundary guard but I am also looking for something else to complement it.

i am using optex BX-80N.

Oh ok ... that's the same one I am using.
Is yours wireless and using battery? Where did you get it from?

Rm1300 actually, 10 vibration, 2 contact and 2 motion. For me its better to have something rather than nothing. Im not a rich person so i didnt expect a well trained theif to rob my house. Just to deter all those biginner theifs are more than enough for me. Others i leave it to god and fate.

no mine is wired. i dont like the idea of wireless sensors.