About Sound Levels
To choose an alarm or speaker that’s loud enough, first determine the decibel (dB) rating of background noise.
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Microphones
![](/prerenderstable/mvPRE/contents/gfx/imagecache/552/55295t225-@halfx_637031800353334760.png?ver=imagenotfound)
Freestanding
![](/prerenderstable/mvPRE/contents/gfx/imagecache/567/56785t31-@halfx_637414552147471094.png?ver=imagenotfound)
Hand Held
![](/prerenderstable/mvPRE/contents/gfx/imagecache/580/58075t33c1--2e13d2300a21572369220-p9@halfx_637079484728366692.png?ver=imagenotfound)
Portable Public Address Systems
![](/prerenderstable/mvPRE/contents/gfx/imagecache/598/5986t24-@halfx_637878638336761794.png?ver=imagenotfound)
Corded
![](/prerenderstable/mvPRE/contents/gfx/imagecache/598/5986t26-@halfx_637878638301754236.png?ver=imagenotfound)
Wireless
Even with the built-in amplifier and speaker, these public address systems are light enough to carry from place to place. They operate on batteries or an AC adapter (sold separately).
Microphone Type | Power, W | Ht. | Wd. | Dp. | Weight, lbs. | Weight with Batteries, lbs. | Cord Lg., ft. | Wireless Range, ft. | Batteries Included | No. of Batteries Required | Battery Size | Includes | Each | |
Corded | 50 | 11" | 14" | 5" | 4 | 8 | 15 | __ | No | 10 | D | Microphone Microphone Cord with Plug Carrying Case | 0000000 | 0000000 |
Wireless | 50 | 11" | 14" | 5" | 4 | 8 | __ | 300 | No | 10 | D | Wireless Transmitter Headset Microphone Lapel Microphone Carrying Case | 0000000 | 00000000 |