| 摘要 |
This device may be used to protect closed premises and prevents breaking-in. It contains gauges, a linear bloc, two storage batteries, an externalised signalling unit, an outlet to external units, an indication bloc, a feeding bloc, a storage battery check-up device, and an electrical lock, whose inlet, together with an inlet of a control bloc, is connected to one of the keyboard's outlets. The second outlet of the keyboard is connected with another outlet of the controlling bloc, with whose third outlet is connected to a bloc of controlling keys. One of the outlets of the linear bloc is connected to the storage, whose outlet is connected to the inlets of the indication bloc and a timer, whose outlet is connected to a fourth outlet of the controlling bloc. The fifth inlet of the control bloc is connected to the second outlet of the linear bloc, while two other outlets of the controlling bloc are connected to the inlets of two amplifiers, whose outlets are individually connected to a sound transmitter and an externalised signalling unit, while the second outlet of one of them is an outlet to external devices.
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