American Time & Signal Co. manufactures system secondary replacements for National Time clocks with wired synchronous correction. The AllSync Plus^® replacement clocks use a solid state circuit board movement instead of the traditional mechanical movement and use 80% less energy.

AllSync Plus EX Series Plastic Case System Clocks $109.95 - $334.95		AllSync Plus EX Series Steel Case System Clocks $119.95 - $349.95		Mechanical EX Series Plastic Case System Clocks $174.95 - $399.95
Mechanical EX Series Steel Case System Clocks $194.95 - $494.95