321 EAST 45 STREET

It was a question of security. The Sands, a 111-unit, 14-story co-op at 321 East 45 Street, was having intercom problems. Although the property, between First and Second Avenues, has a doorman on duty from 4 P.M. to midnight, residents were concerned about relying on the 56-year-old intercom as the only watchdog.

"The system was pretty much under continual repair because there seemed to be some internal wiring problems due to its age," recalls Tom Uhl, a board member. "In my own unit, I could release the door from my apartment, but I couldn't hear the doorman or any guests on the phone or they couldn't hear me. So it came down to the point where if I knew visitors were coming, they called me on the cellphone from the vestibule, and I released the door. But if I had a surprise guest or somebody was delivering something, and they didn't have my cellphone number, it was a problem."