A water-powered residential fire suppression and alarm system is provided. The system comprises a sprinkler head, a water-powered alarm, a fire-resistant transfer line assembly, and a housing assembly. The sprinkler activates upon excessive heat. An unclosable channel connects the alarm with the sprinkler head. The transfer line assembly includes a fire-resistant transfer line connected the alarm and to a multi-port coupling. The multi-port coupling also connects to an existing water fixture. The transfer line assembly is unclosable. The housing assembly has a housing with a vertical span of about 3-12 inches. The sprinkler head and alarm are mounted to the housing assembly and the transfer line assembly is connected to the housing assembly. The transfer line assembly connects to the sprinkler head directly as well as through the alarm. When water is provided to the coupling and the sprinkler head activates, water flows through the transfer line, activating the alarm.

A water-powered residential fire suppression and alarm system is provided. The system comprises a sprinkler head, a water-powered alarm, a fire-resistant transfer line assembly, and a housing assembly. The sprinkler activates upon excessive heat. An unclosable channel connects the alarm with the sprinkler head. The transfer line assembly includes a fire-resistant transfer line connected the alarm and to a multi-port coupling. The multi-port coupling also connects to an existing water fixture. The transfer line assembly is unclosable. The housing assembly has a housing with a vertical span of about 3-12 inches. The sprinkler head and alarm are mounted to the housing assembly and the transfer line assembly is connected to the housing assembly. The transfer line assembly connects to the sprinkler head directly as well as through the alarm. When water is provided to the coupling and the sprinkler head activates, water flows through the transfer line, activating the alarm.

A fire or overheat detection device includes a diaphragm adjacent to a chamber with a gas inside the chamber, wherein the diaphragm contacts the gas. The fire or overheat detection system also includes a Fabry-Perot interferometer. At least a portion of the Fabry-Perot interferometer is coupled to the diaphragm via a linkage. A light source is configured to direct an input light into the Fabry-Perot interferometer.

Provided is a security surveillance system and method capable of separately detecting fire and intrusion situations on the basis of a sound field variation, including a sound generating device outputting, into a set security surveillance space, a multi-tone sound wave formed of a linear sum of sine waves having a plurality of frequency components, a sound receiving device obtaining sound field information for each frequency represented as sound pressure and a phase from a sound wave received in the security surveillance space, and a sound field signal processing device storing sound field information for each frequency obtained from the sound receiving device in a preparation mode, comparing the stored sound field information with current sound field information for each frequency output from the sound receiving device in a surveillance mode, and determining occurrence of a security situation.

Provided is a security surveillance system and method capable of separately detecting fire and intrusion situations on the basis of a sound field variation, including a sound generating device outputting, into a set security surveillance space, a multi-tone sound wave formed of a linear sum of sine waves having a plurality of frequency components, a sound receiving device obtaining sound field information for each frequency represented as sound pressure and a phase from a sound wave received in the security surveillance space, and a sound field signal processing device storing sound field information for each frequency obtained from the sound receiving device in a preparation mode, comparing the stored sound field information with current sound field information for each frequency output from the sound receiving device in a surveillance mode, and determining occurrence of a security situation.

A fluid supply system includes: a backflow preventer; and a bypass coupled in parallel with the backflow preventer, the bypass comprising at least one bypass flow meter coupled to at least one check valve, at least one of the at least one bypass flow meter or the at least one check valve being configured to generate associated alarm data in response to flow of a fluid through the bypass and transmit a flow alarm signal to a building fire panel when the associated alarm data indicates that the flow of the fluid varies from an expected flow of the fluid.

A fluid supply system includes: a backflow preventer; and a bypass coupled in parallel with the backflow preventer, the bypass comprising at least one bypass flow meter coupled to at least one check valve, at least one of the at least one bypass flow meter or the at least one check valve being configured to generate associated alarm data in response to flow of a fluid through the bypass and transmit a flow alarm signal to a building fire panel when the associated alarm data indicates that the flow of the fluid varies from an expected flow of the fluid.

The invention relates to an alarm valve station for a fire alarm system, having an alarm valve with an extinguishing fluid inlet and an extinguishing fluid outlet, wherein the alarm valve is set up for selectively releasing or blocking the extinguishing fluid flow between the extinguishing fluid inlet and the extinguishing fluid outlet, having a pressure sensor which is in a fluid-communication with the alarm valve and which is configured to detect a change in pressure and for converting this into an electrical alarm signal, and having an alarm delay device for delaying the alarm signal. It is proposed according to the invention that the alarm delay device is designed as an electrical alarm delay device and is connected in signal-communication with the pressure sensor.