Our alarm system is 10 year old. It was pre-wired. So far we have had bell box replaced. Now we need a new motion sensor and new keypad. We also want to take the opportunity to get some kind of monitoring either full monitoring or text service. We have been told different things by different companies. One says the wiring will still be fine and we should have no problems once keypad and sensor are upgraded and two say because the wiring is ten years old we need a new wireless system. To be honest, the upgrade is not working out that much cheaper than replacing whole thing with wireless but is this really necessary? We have had issues in the past with the alarm going off even when not set but are fairly happy with the system we have since the bell box/ tamper was replaced. My fear is if we go for the upgrade we ll only have to replace whole system a year or two down the road. Does the wiring really deteriorate that much? Any advice would be great. Thanks.