National SHVT17612W Apartment Intercom National SHVT17612W This is a 100V direct connection type, so please have an electrician or specialist handle the installation and setup. There are some scratches, wear, and signs of use. This item is offered as-is. It was working normally before removal, but detailed operational checks have not been performed. We have stock of SHVT17612W. If you would like one, please feel free to comment.