Job Lizenz Gmbh Co., Kg

Gerhard Ropke

An alarm annunciator, particularly a gas or fire annunciator, having a casing mountable on a wall or a ceiling, which contains an alarm detector, which is in wireless connection with the surroundings of the casing via at least one opening, an electronic circuitry for the evaluation of the signals of the alarm detector, a wireless module, connected to the electronic circuitry and having an antenna for wireless receiving or sending signals to/from a sending/receiving station, and a battery for the power supply of the electronic circuitry and the wireless module, characterised in that a metallic protection screen covering the opening is designed as an antenna and is connected with the antenna output socket of the wireless module.

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Lubeck-Travemunde, Germany

Gerhard Ropke