Call 415-440-0300

Mark is businesslike, gave an accurate and fair bid, and came when we scheduled. He finished the work (replacing three intercoms) and used existing wiring (other contractors wanted to rip out the walls), I'm very happy and recomend him highly

Barbara D.


Go with someone who's been there
 Mark, owner/technician


With a degree in Electronics and over 45 years combined low-voltage experience, and having specialized in only Intercoms for the last 25 years, am uniquely qualified in providing you the service you expect from a professional. I provide FREE expert diagnosis at the start of every job or repair. I will provide you with a free estimate as well.

  • Apartment Building Intercoms
  • Offices/Schools/Retail
  • Warehouses and Paging
  • Commercial and Access Control, Keypads and FOB's
  • Residential, Doorbells,Video Intercoms, Mailboxes, and Door Releases.

Intercoms - service    and installations

We have been Installing and Servicing Intercoms for Properties in San Francisco  for over 25 years. Telephone Entry or Hardwired. Our speciality is Apartment Building Intercoms, but we also Service and Install any and all types of Intercom Systems. We do Paging, Keypads, Door Releases, Key FOB's,  Video Intercoms, and Mailboxes.