Members are advised to exercise caution when dealing with door to door alarm system sales people. To begin with, it is difficult to determine whether the person at your doorstep is a legitimate representative or not. Uniforms and badges can be used by fraudsters to deceive people into thinking that they are connected with a legitimate company. There have been cases where the door to door contact person is really a criminal using the sales routine to look over your home for items to steal later. Once inside your home on a "sales call", they could just rob you on the spot. If you don't know who the person is standing at your doorstep, they should never be allowed inside your home. A confirmation call could be made to the published business number of the alarm company and an appointment could be made at a later date.
If you are truly interested in an alarm system, contact several alarm system companies and arrange appointments for each to present a proposal. Competition is usually a good method of securing a lower price. It would also be a good idea to contact the local Better Business Bureau for the company ratings and history. Since safety is the reason for an alarm system in the first place, do not sacrifice safety by inviting strangers at your door step into your home.