Recent Review: Holmes technicians showed up on time for the installation and professionally installed window and door sensors, two control panels, and a main control box with battery backup. The installation was clean, professional and they cleaned up after themselves. I also had them install a monitored smoke detector while they were here. Their monthly monitoring fees are among the lowest in the business. We have accidentally set off the alarm on at least half a dozen occasions over the years and each time, the phone is ringing within seconds! My family and I feel safe and completely secure with our Holmes alarm system and would not think of having any other company monitor our system.