I have never used it, but there are sensors on the front and back door, ground floor interior doors, ground floor windows and motion sensors in 2 rooms (one of which I have removed). I disconnected 1 of the motion sensors and ever since the 'Tamper' light on the alarm has come on and I cannot set the alarm. I have tried my own amatuer attempts to 'Reset' the alarm, unsuccessfully. I have also tried to find someone to come and fix it. So far, have only found people who will charge £150 plus just to have a look, not guaranteeing success, or wanting to sell me a new alarm and service contract.
I want to start using an alarm. The system here would do everything i want. Any advice on fixing it would be much appreciated. Or considering it's age should I just replace the conrol box and use the existing cabling (and sensors?)?