If you want
professional monitoring, Nest Secure has a partnership
with Brinks Home Security that offers no contract $29/month and three year contract $19/month options. You can also use the system without monitoring, which doesn’t require a monthly fee. Read the full reviewAffordable MonitoringSimpliSafeLow StockSimpliSafe The Essentials$14. 99/mth?Visit Siteat SimpliSafeAffordable professional monitoringLimited smart home compatibilitySimpliSafe is one of the best DIY home security systems for professional monitoring, which costs around $15 a month. This is a lower price than Scout and abode, though it lacks smartphone app controls. Unlike the competition, SimpliSafe uses a cellular connection for its primary connection, something that other systems only use as a backup.