Well, if you want to use no time delay function

Positives:
The programming of the components and their installation was after the first restoration of the original configuration (see negative points) very easy and went quickly. I have the facility now about 4 weeks use, no false alarms so far. One took place every now and then checks the alarm function was previously no glitches, the alarm triggered reliably, SMS were sent as programmed.

Negatives:
Initially I had problems with the programming of the sensors that are not doing what they should, even though I was going strictly according to the instructions. This occurred because probably some sensors were already programmed. After one-time recovery of the original configuration, everything went perfectly, I have read afterwards that other buyers had this problem. So recommendation: Once all set to zero and then start.

A major drawback is that you can in my view with the available components hinbekommt no meaningful and reliable configuration for a delayed arming and disarming the alarm points. This function is needed, however, if you want to also enable the system without remote controls when leaving the house and turn off again when entering for me a basic function of an alarm situation. The Situation:

the siren is controlled directly from the central processing unit (no external power supply and control)
if the central unit is therefore placed near the front door, after entering the house instead of entering the number combination for defocusing the alarm simply the cable be pulled out then there is no alarm
by telephone demand to improve this situation, recommending Mr. Demirbas attaching the central unit in the protected area of ​​the house and use a wireless keyboard (keypad Touch), which is then to be mounted near the door
I bought and built this keypad on the homepage Multikontrade
Unfortunately, this works like a remote control, that is, a delayed arming is not possible via the keypad
you have this so it make on the central unit, which yet again indented for this reason in the area of ​​the door (albeit tucked away in a side room, but so close that you can not take too long of the time-delayed activation until you leave the house)
when entering the house and triggering the delayed alarm, the CPU then every second one (rather loud) beep, thus betraying their position, so you can also turn off again by pulling out the cable to the siren system
this beep you can not leave here I hope very on a change in the firmware with an upgrade path

Conclusion:
Value for money is good to very good if you do not want to operate in delayed mode system. In this case, the system has a considerable weakness during a break on the doorstep. If this flaw will be fixed later still by a firmware update (so that the beep of the CPU can be turned off and the keypad a delayed arming refresh themselves), I would distribute 5 stars, but only so. 3