Do you want your DVR to call your cell phone, house phone or both during an emergency? This digital dialer connects to an alarm output port the embedded DVR. When an alarm is triggered by an event, such as motion detected, the dialer calls to alert you. You can then remotely access your DVR and view exactly what is happening and alert the police if necessary. This is a great add on to your video surveillance system helping you keep tabs on the business no matter where you are.