| 摘要 |
A door locking/releasing circuit with remote controller includes a microprocessor (21) for locking the door and for driving the burglar alarm, a long wave transmitter (22), a code signal detector (23) for detecting the code signal from the remote controller, a locking device driver (24), and a sensor (25) for detecting the external impact. The remote controller always radiates the coded RF signal, and the main circuit controls the locking/releasing the door lock according to the distance from the owner. |
