| 摘要 |
Emergency release burglar bars having electronic locks that are actuated remotely by a signal generated by a smoke detector alarm provide security and will automatically unlock upon detection of smoke in the premises without human intervention to allow safe exit from the premises, and easy access and entry to the premises by emergency personnel. When the smoke detector/alarm senses smoke in the premises, its alarm is "powered on" to sound the alarm. A relay connected with the alarm circuit is activated simultaneously with the sounding of the alarm, which activates an "unlock" switch of a transmitter connected with the relay to transmit an RF "unlock" signal. Receivers on each of the electronic locks receive the transmitted signal, and activate an actuator, which actuates a mechanism to retract the bolt of the lock, allowing the burglar bars to be swung open.
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