| 摘要 |
A burglar warning alarm for doors and windows within a room has a de-activating stage that responds to one specific signal remotely generated. A processing stage consisting of series coupled NOR gates providing an output connection to wardning devices, such as an alarm, acoustic warning device and a telephone system. The conditioning input may generate from a radio signal generator. When the conditioning input is zero and a sensor is tripped the processing circuit operates the selected warning device. A timer provides automatic reset. Deactivation of the circuit occurs when the conditioning input becomes '1'. |
