Atlas is very quick to respond to my alarms. There are times when I accidentally set off my alarm (ie, opening the window while the 'stay' alarm is on). Within a minute, I got a call from Atlas asking whether I was alright and for me to give them my 'safe' password. They also verified several personal information of mine before hanging up. With Atlas, I feel safe and I would definitely recommend it to anyone else who is looking for a security alarm system.