I went with Sentinel Security 2 years ago and regret it now. They sold me on hardwiring the sensors and a 3 year contract. The installer hardwired 3 windows and used wireless for the rest of the doors and windows. He told me wireless was better and not to worry. He was wrong. They used cheap components overall when they installed the system. The sensors have started to malfunction. When they sold me the system initially they said they would service the account and change the batteries on the wireless sensors. They have not come close to doing that. I was not given a manual during the initial setup so have had to trouble shoot online why there are problems. I changed the batteries and they still don't work. The manager has promised to send a service rep but has not delivered. He answers my calls and says he will call me right back and doesn't. The service is beyond awful....it's non existent. Buyers be ware when getting a home security system. These companies come and go and will promise a great system but the support with this company has not been there, not to mention the components did not last very long.