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The xenon tubes used in fire alarm strobes are typically rated for several thousands of hours of operation. Given that these strobes rarely operate for more than a few minutes at a time, and usually only during testing, anywhere from annually to monthly, the expected life would be for many years. It is much more likely that a building's strobes would have to be replaced due to legal requirements such as fire alarm or ADA codes changing than due to the device itself wearing out.

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