 It's also a system that any DIYer can do. In fact, my son-in-law and I did this ourselves in under an hour. SimpliSafe is backed by 24-7 professional monitoring, guarding your home with sensors and cameras to protect your family. With 24-7 LiveGuard, agents act within five seconds of receiving an alarm and take immediate actions to protect you. They can even see and speak to intruders inside your home, stopping them in their tracks.