| 摘要 |
<p>A method and apparatus that includes housing (12) in which a speaker (14) and strobe light (22) are located with the speaker (14) linked to an audio alert adjuster (20) and a strobe light (22) linked to a visual alert adjuster (24). The alert levels of both the speaker (14) and the strobe (22) are shown on the exterior of the housing for ease of inspection. The adjusters are located within or outside the housing. The adjuster 'located within the housing aid in preventing tampering with the levels.</p> |
