I use ARLO, you can view it live if you arm the system. The cameras will record on motion and sound, you can adjust the sensitivity of both. You get free cloud storage for up to 7 days if there's a clip you want to save you can download it. It alerts you when a camera is tripped you can watch the clip from your phone or go live to the camera that was tripped. The base station is connected to your router the cameras are wireless with rechargeable batteries. It also allows you to set off an alarm from your phone or you can configure it to set off the alarm when a camera is tripped.
www.arlo.com