  Buying a new alarm system info please ?
I currently have a hard wired home alarm systems with several pir's, window vibration sensors, door contacts etc etc.
Iam going to be needing a new system soon but iam hating the thought of all the wires and fuss etc, so i thought about a wireless system, but i dont know if they are any good, are they ?? and how do they work, i dont fancy having to replace batteries all the time in the pir's and bellbox, i just want summit really basic, dont need all the bells n whistles like this current system, just maybe need two pir's the mains box/keypad and the entry/exit door contact thingy i guess ??, ohh, and a real bellbox and a fake one.
anyone any input on this please ? | 
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