| 摘要 |
A device for controlling back-end reporting facilities comprises a peak overvoltage protection device connected to input of electric supply of three-phase current 220/380 V, manual on/off device at current overload, ac/dc converter, battery charge control apparatus, electric battery, battery discharge control apparatus, power supply switching unit, central control unit, device for connection of central control unit to the back-end reporting facilities, radio station, condition sensors, at least one sensor of unauthorized opening, output to antenna and back-end reporting facilities. The device for controlling back-end reporting facilities is made so as to reproduce verbal messages and alarm sound and comprises at least one back-end reporting facility as loud speaker connected to corresponding sound amplifier. In addition it comprises an electronic phase selector for reservation of primary network supply at disconnection of one or two phases of three-phase network, ac/dc converter for battery charge, at least one back-end reporting facility as light annunciator, device for storage of previously recorded verbal messages connected to the central control unit. |
