Abstract: A firefighter's telephone communication system is provided that includes a polarized telephone station that may be connected to either 3-state (detection of normal, open, or call-in) or 4-state (detection of normal, open, short, or call-in) telephone control panel, without the need to alter the telephone station.

Abstract: A fire alarm system is provided including a controller having a signaling delay, a plurality of smoke and/or heat detectors, a plurality of audible devices which may include sirens, public announcement devices and the like, and a plurality of visible devices which may include strobes, fluorescent lighting and the like. The system provides a directional path to areas of safety for occupants in harms way.

Abstract: A firefighter's telephone communication system is provided that includes a polarized telephone station that may be connected to either 3-state (detection of normal, open, or call-in) or 4-state (detection of normal, open, short, or call-in) telephone control panel, without the need to alter the telephone station.

Abstract: A device for monitoring changes in airflow rates through detector dust filters in addition to assessing air for alarm indicators, including smoke, heat, gas, and relative humidity, is provided. A method monitors airflow through the detection device and provides a maintenance indication when the airflow has been reduced due to contamination of the dust filters.

Abstract: A device with a multi-function test feature for assessing or directing multiple sensor functions is provided for monitoring and interrogating air flow through Heating/Ventilation/Air-conditioning (HVAC)-type ducts for changes to ambient conditions such as smoke, heat, gas, and/or relative humidity.

Abstract: A fire alarm system is provided including a controller having a signaling delay, a plurality of smoke and/or heat detectors, a plurality of audible devices which may include sirens, public announcement devices and the like, and a plurality of visible devices which may include strobes, fluorescent lighting and the like. The system provides a directional path to areas of safety for occupants in harms way.

Abstract: A device with multiple sensors for detecting multiple alarm conditions coupled to a single control unit provides for monitoring and interrogating air flow through Heating/Ventilation/Air-conditioning (HVAC)-type ducts for changes to ambient conditions such as smoke, heat, gas, and/or relative humidity.

Abstract: A device for monitoring changes in airflow rates through detector dust filters in addition to assessing air for alarm indicators, including smoke, heat, gas, and relative humidity, is provided. A method monitors airflow through the detection device and provides a maintenance indication when the airflow has been reduced due to contamination of the dust filters.

Abstract: A device with a multi-function test feature for assessing or directing multiple sensor functions is provided for monitoring and interrogating air flow through Heating/Ventilation/Air-conditioning (HVAC)-type ducts for changes to ambient conditions such as smoke, heat, gas, and/or relative humidity.

Abstract: A device with multiple sensors for detecting multiple alarm conditions coupled to a single control unit provides for monitoring and interrogating air flow through Heating/Ventilation/Air-conditioning (HVAC)-type ducts for changes to ambient conditions such as smoke, heat, gas, and/or relative humidity.

Abstract: A life safety system with a micro-controller that is programmed to operate both a visual signal and an audible signal. One feature of the system is that a user is permitted to enter a temporal signaling mode for not only the audible signal, but also the visual signal. The program includes an energy saving routine that operates the visual signal in the temporal mode with an energy consumption that is substantially smaller than required for operation in a continuous mode. The temporal pattern has four cycles with one flash pulse per cycle for the first three cycles and no flash pulse for the fourth cycle.

Abstract: A life safety system with a micro-controller that is programmed to operate both a visual signal and an audible signal. One feature of the system is that a user is permitted to enter a temporal signaling mode for not only the audible signal, but also the visual signal. The program includes an energy saving routine that operates the visual signal in the temporal mode with an energy consumption that is substantially smaller than required for operation in a continuous mode. The temporal pattern has four cycles with one flash pulse per cycle for the first three cycles and no flash pulse for the fourth cycle.

Abstract: An auto synchronous output module for use at a plurality of zones in a fire alarm and detection system consisting of a power source and output devices selectively coupled to the power source so as to provide audible and visual signals, and a microprocessor within the module for coupling to a data line so as to enable transmission of data signals to and from a loop controller. Moreover, there is within the processor, responsive to an activate command from the loop controller for applying the power source to the output devices responsive to an alarm condition. In addition, within the processor, responsive to a synchronize command, sent subsequently to the activate command, from the loop controller, for applying power to the output devices in synchronism with application of other power sources to output devices at other respective modules.

Abstract: A field programmable audible signal having voice message annunciating capability and a field programming device. The signal has two separate field programming paths. One path includes a built in microphone and the other is a facility to receive a download voice message from a field programming device as by a cable that plugs into both the signal and the programming device. The field programming device is capable of providing either of two messages during a download operation. The field programming device includes a record facility to change at least one of the messages and is small enough to fit in a hand held housing.