When determining which sound is right for your application, you should first consider the following:

• In what type of product will the signal device be used?
• Who is the audience that will be impacted?
• Should the tone be continuous or intermittent? (Intermittent tones are generally more discernible than continuous tones.)
• What is the magnitude of sound required to perform the expected task? (Most devices are available in loud, medium, or soft dB levels.) Care should be taken to make certain the device's tone doesn't blend into the background.
• Does the immediate environment present any constraints as far as the type of sound or sound level is concerned? Will the signal present an annoyance or impair the work of people or equipment in close proximity to the device?