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US 9,542,831 B2Granted
Audible/visible evacuation notification device
AssigneeHoneywell International Inc.
InventorFred M. Butalla, III
Life of this patent
Estimating the term…
Abstract
An output device emits alarm indicating light and sound at predetermined levels when activated. The device enters a test mode in response to received test mode indicating control signals. When the device is in the test mode and a local test initiating control signal is received, audio and/or visual outputs are emitted at a level reduced from the alarm indicating output levels to test those outputs.
Claims18
A test method comprising:
- receiving a test mode indicating signal, wherein a duration and amplitude of the test mode indicating control signal determines whether a unit being tested should enter a test mode;
- initiating the test mode at an alarm indicating output device, wherein the test mode includes entering a standby mode;
- the alarm indicating output device remaining silent in response to the test mode;
- providing a local test activating input to the alarm indicating output device;
- and
- responding to both the test mode and the local test activating input by outputting at least one local test indicating indicium.
3 more elements
A testable output device comprising:
- a housing;
- an audio output device carried by the housing;
- control circuits coupled to the audio output device and carried by the housing, wherein the control circuits respond to a test mode indicating signal without activating the audio output device;
- and
- test circuits coupled to the control circuits to respond to a local test initiator,
- wherein, responsive to the local test initiator, the control circuits activate the audio output device to output an audio test indicium,
- wherein the control circuits respond to a duration and amplitude of the test mode indicating signal and enter a standby mode, and
- wherein, when the test circuits receive the local test initiator, the control circuits activate the audio output device to output the audio test indicium.
5 more elements
An output device comprising;
- test circuits;
- a light source;
- an audible source;
- and
- control circuits coupled to the light source and the audible source and configured to activate the light source or the audible source in response to predetermined control signals,
- wherein alarm indicating light is emitted by the light source and audio is emitted from the audible source at predetermined alarm indicating levels when activated,
- wherein the output device enters a test mode in response to received test mode indicating control signals, and
- wherein, when the output device is in the test mode, and when a local test initiating signal is received, at least one of light and/or audio outputs are emitted at a level reduced from the predetermined alarm indicating levels to test the light and/or audio outputs,
- wherein the control circuits respond to a duration and amplitude of the test mode indicating control signals and enter a standby mode, and
- wherein, when the local test initiating signal is received, the control circuits activate at least one of the audible source and the light source.
7 more elements
Dependencies are inferred from the claim text.