Blue	Blue LED Displays
CW	Ceiling/Wall Mount Bracket
Green	Green LED Displays
NTP-C	NTP Client: NTP Client Displays synchronize exclusively with an NTP server (replaces all standard inputs).
PoE	Receives 48V operating power via Ethernet cable. A passive power injector is required.
TZ	Time Zone Offset: Internal DIP switch allows the hours (and half-hour) to be independently offset to any time zone.
UL	"UL" Approved Power Supply: The unit is supplied with a UL/CSA approved wall mount power supply.
W	3-Wire Power Cord: Recommended where static charges can occur. Standard on many units, otherwise a 2-wire cord is supplied.