| 摘要 |
In an intruder alarm system, the alarm circuitry (110) is controlled (i.e. armed, standby or set to any of a predetermined operational modes) by an access and control subsystem (100) which includes at least one remote control station (1) provided with both an input switch (2) and an annunciator (3) (e.g. buzzer), the control being effected by a coded operation of said switch. Commands such as WALK TEST, CIRCUIT SHUNT, "stand-by" and "active" are selected depending on the command. The detection loop processing control circuit (5) processes the detection loop circuit conditions and, depending on the condition of the alarm system, acts on them accordingly. <IMAGE> |
