Patent ID: 9525308
Filing Date: 2016-12-20
CPC Classification: A62C,E05F,E05Y,H02J

Claim Text:
1. A door release device, comprising: a microcontroller for controlling operation of the door release device, the microcontroller operable in a normal power mode, in which the microcontroller is powered by mains building power, and a backup power mode, in which the microcontroller is powered by a non-rechargeable backup battery; a switching assembly communicatively coupled to the microcontroller, the switching assembly operable to switch the microcontroller between the normal power mode and the backup power mode; and wherein in response to a detection of a mains power failure, the microcontroller configures the switching assembly to facilitate switching from the normal power mode to the backup power mode to enable the microcontroller to remain operational during the mains power failure.