System Reliability

System reliability can be a problem when it causes false alarms, or fails to alarm when called for. Either way, the source of the problem should be immediately found and fixed, so that responders will not lose confidence in the alarm reports. It is easier to know when there are false alarms, because the system is designed to react to that condition. Failure alarms are more troublesome because they usually require periodic testing to make sure the sensors are working and that the correct signals are getting through to the monitor. Some systems are designed to detect problems internally, such as batteries going flat, connections come loose, phone circuit dead, etc. While earlier alarms could be set off by small disturbances, like insects or pets, newer model alarms have technology to measure the size/weight of the object causing the disturbance, and are able to decide how serious the threat is, especially useful in burglar alarms.