2N Home intercom 2N Helios - Secondary switch with dep.button funcion, 1977 v1 - Příručka (Stránka 4)

External switch functional description:
After an external button (switch on the pic. above) is pushed (switch OFF→ON), departure
switching occurs regardless of configuration settings. After an external button is
released (switch ON→OFF) departure switching ends with delay set by adjustable rotary
trimmer (pic. below) from approx. 1 sec. up to 10 sec. regardless of configuration
settings. NC and NO on the pic. above in this case refers to the door state if switch is in
OFF state too.
Both connectors (for external button and door lock) are galvanically isolated from each
other and main electrical circuitry of the main communicator board.
Technical Parameters
Switching device Latching relay
Max. switching voltage 60V AC, DC
Max. switching current 2A AC, DC
Max. switching power 60VA / 30W
Power supply for external button input: voltage ≥ 10 ≤ 15 (V),
available current must be: ≥ 6 mA.