Proxim AP-4000 User Manual page 30

Installation and Initialization
Hardware Installation
cables must comply with certain safety requirements, such as Underwriter Labs (UL) Standard 2043: "Standard for Fire
Test for Heat and Visible Smoke Release for Discrete Products and Their Accessories Installed in Air-Handling Spaces".
The AP-4000/4000M/4900M has been certified under UL Standard 2043 and can be installed in the plenum.
When installed in a plenum, the AP must use Active Ethernet.
AP-4000 Series User Guide
30