Mark, is this home security system a waste? I have three door/window sensors, two motion detectors, and the central control panel, smartphone apps, and all that... $45/month. He wants to go down to $20/month and get rid of some of the sensors. Imo, if I'm going to do this right, I plan to buy extra sensors to cover each door and window, you know? Why half a$$ it? That's where I'm coming from anyway. I just hate to half do it. Then again, I'm home most of the time because I work from home. I just feel like if I get the cheaper monthly monitoring with no smartphone app, and fewer sensors ... what's the point? Essentially, I'm paying for the customer service and 24/7 monitoring. We have smash -n- crash, wireless, cellular ... there are no cords for them to cut, there's 24 hr battery backup if they cut the power, and the alarm goes off at the central station if they smash it. So, seems foolproof to me.