The AF3600 transfer unit distinguishes between ring signals from 2 different entrances sends a unique tone and current to energize only the one entry (back or front) from which the signal came. It is used with the 3404 (4-wire) or 3406 (5-6 wire) apartment station.
N**K
Good device
Good device
Trustpilot
3 days ago
2 months ago
