When power is connected between the button and a Fail-Secure lock activation of the momentary button will release the lock for the duration the button is pressed.
Once the button is released the lock will return to the locked state.
United Security HUB2SA Hold-up Button, Momentary SPDT, 3 Screw Terminals
$39.18
LEM-1DLS audio door answer and release system by Aiphone
$251.60
RRB-1 Remote Release Button N.O. contact
$25.00
DRC-4 Desktop Console, Four Momentary Pushbuttons
$144.50
FT-1 Remote Release Foot Switch
$110.50
Aiphone JOS-1A Access Sentry Kit w/ Intercom & Door Station
$693.60
DoorBird D201 IP Video Door Station, Stainless, Surface **DISCONTINUED**
$540.00
DoorBird D101S IP Video Door Station Surface Mount **DISCONTINUED**
$498.97
Installation Schematics and Wiring Diagrams
see product for price details