6-Digit	Six-Digit Display: A 6-Digit (Hr, Min & Sec) Front Panel Mounted Display. Option 'P' is required.
8-Digit	Eight-Digit Display: An 8-Digit (Hr, Min, Sec & Frames) Front Panel Mounted Display. Option 'P' is required.
DC	12 VDC Input: Allows the unit to be operated exclusively from a +6 to +35 VDC source.
P	19" Front Panel (Rack Mount): Designed for mounting into a standard equipment rack. Panel is 1/8" black anodized Aluminum and chassis is 5" - 10" deep.
P2	Dual Rack Mount: Allows specific units to be mounted side-by-side on a single Rack Mount panel.
UL	"UL" Approved Power Supply: The unit is supplied with a UL/CSA approved wall mount power supply.