Emerson Smart Wireless THUM Adapter Reference Manual page 4

NOTICE
The THUM and all other wireless devices should be installed only after the Smart Wireless
Gateway has been installed and is functioning properly. Wireless devices should also be
powered up in order of proximity from the Smart Wireless Gateway, beginning with the
closest. This will result in a simpler and faster network installation.
NOTICE
During normal operation, or in fault condition, the THUM will cause a 2.5 V drop in the
connected loop. It is important to ensure that the power supply can provide at least 2.5 V
more than the lift off voltage of the wired device to make sure it works properly with the
THUM installed. To determine the lift off voltage for the wired device, review the wired
device operation and installation manual.
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Reference Manual
00809-0100-4075, Rev CA