Be cautious of very short warranty and limited value of annual servicing. We have had a Lynx alarm for the last three years and paid for a service each year. Shortly after our last service the system has developed a known fault on one of the sensors. This exposed the very limited warranty and high cost of annual service with no real benefits to customers. I am loathed to write this poor feedback, but having given the company a chance to do the right thing they were curt on the phone and inflexible. In short, while our installation experience was good, there is no value in getting the system serviced and future customers should ask for an extended warranty period.