Digital Clocks
 | DLX225/DLX400 Series The DX Series includes field selectable features such as 9 brightness levels, exclusive Architectural Auto-Dim, 12/24 hour display format, 50/60Hz power selection, and time setting buttons for stand-alone operation. Available in wide-bar 2.25" and 4" versions. |
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| DLU225/DLU400 Series In addition to all of the above features, the DU Series is a truely universal clock. The DLU digital clock can be a drop-in replacement on existing analog synchronous clock systems by National or other manufacturers. Reset input can be from 17 to 132 VAC or 17 to 32 VDC. |
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 | DLU225-6/DLU400-6 Series Add a seconds display to all of the features of the DU225 or DU400 Series features and create this ultimate digital clock. Can be intermixed with all National's digital series and most analog clocks by others. |
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 | TIMEWISE™ Series WiFi Digital Clocks National Time & Signal, America’s oldest clock system manufacturer, has integrated WiFi technology with the highest quality manufacturing in the industry to create the TIMEWiSE™ family of clock systems. This blend of technologies has resulted in an innovative time keeping platform designed to leverage your existing WiFi infrastructure to conveniently operate and manage your clock system. |
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 | ET Series Digital Clocks Our next generation technology eliminates the complexity and high costs of today’s Power-over-Ethernet (PoE) approach and delivers the simplest, most affordable answer to reliable, precise time throughout your facility, your campus, or your worldwide operations. |
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 | Clear View (CV) Guard Our next generation technology eliminates the complexity and high costs of today’s Power-over-Ethernet (PoE) approach and delivers the simplest, most affordable answer to reliable, precise time throughout your facility, your campus, or your worldwide operations. |
