Valcom's V-1072A-ST Talkback Doorplate Intercom, is an ideal choice when you need to control access to your facility or certain areas of your building. With the push of a button, a visitor initiates a two-way call, and you have the ability to grant or deny them access. V-1072A-ST Talkback Doorplate Intercoms can be used with all of Valcom's Handsfree Talkback Page Controls, door answering units or any control with a 45 Ohms speaker output.