SDC - 491 - Break Glass Door Release Emergency Exit - Blue Networking Supports resetting the key frequency

Supports resetting the key frequency between 315 MHz and 433

IP67 protection

Built-In POE

Strikes 1-1/4” x 3-5/8”

SDC - 491 - Break Glass Door Release Emergency Exit - Blue Networking Supports resetting the key frequencyThe SDC 491 Break Glass Door Release Emergency Exit provides immediate unlocking of perimeter doors or interior doors that are equipped with fail safe electric locks. The 491s built in alarm may be used as a local door annunciator. The SDC 491 is specifically designed for emergency door release and may influence the approval of an electric locking system. This type of Emergency Door Release may be preferred over a pull station since greater commitment