Buildings, Bowling Alleys, Elevators, Restaurants
10-call master
10-call master for door release
20-call master
20-call add-on selector
40-call add-on selector
40-call add-on selector w/40-call expander
1-call door adaptor
10-call audio door adaptor
10-way door release adaptor
Handset sub
Call extension at TC-M
Audio door station