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Circuitry for the transmission of voltage signals
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Connection arrangement for a hazard-warning installation
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Circuit arrangement for signalling alarms
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Circuit arrangement for entering a telephone number in a telephone number store of an automatic telephone dialling unit
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Arrangement for monitoring a lock
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Mirror arrangement for a detection device
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Window breakage detector for intruder alarm - has piezoelectric element and evaluation circuit combined in flat housing
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ALARM SYSTEM
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METHOD FOR TRANSMITTING BINARY SIGNALS VIA A FOREIGN WIRE NETWORK
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SYSTEM FOR TRANSMITTING BINARY SIGNALS BETWEEN THE COMPONENTS OF AN ALARM SYSTEM
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Inconspicuous movement detector for burglar alarm - uses IR sensor installed in sunken mains switch box, flush with wall plaster
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Electric door opener for glass swing door - cooperates directly with edge of door without requiring extra components on door
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Electric door opener with electromagnetically released lock - requires current only during opening or closing to reduce power consumption when door remains open
