I have had simplisafe in my house and shop for years. $19.99 a month. Works great. I get a text message instantly when the alarm is triggered and a few seconds later their dispatch calls. The only downside is it is all wireless and runs on AA batteries. The ones in the house do good and last a long time and the sensors in the shop last long but the keypad in the shop I replace the batteries on 3-4 times a year. The cold gets them I guess. The house keypad batteries last a year.