We just have Vector alarm system installed about one and a half year ago. We had several services done already. We were out of the country and the window sensor was already low battery(the system was just installed less than 3 months then) and they have to call our emergency contacts. We have to call overseas to make sure nothing is wrong with our house since they left messages that we have to call them back immediately. I was quite disappointed because the system was just installed and I already have problems with it. The succeeding months we have plenty more of problems such as two of the sensors are not communicating and then they also have to change the entire control panel since they cannot resolve our problems. Recently, the sensor went low battery, I called them up and they said it was going to be covered and I didn't have to pay anything, bu then after the technician changed the battery, they sent me a bill for $37! The battery cost only $4 if you buy them from the store. I should have changed it myself if it weren't for the customer service staff telling me that I wouldn't pay anything if they come and do it themselves. What kind of staff they have? They give customers inaccurate information and then charged you ridiculous amount for cheap batteries that they claim will last 3 years! I haven't even with them 2 years and I already have two sensors with low battery! I wouldn't recommend this company at all. Don't waste your time and money with them.