American Time & Signal Co. manufactures replacements for National Time wired synchronous system secondary clocks. The AllSync Plus^® replacements 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 $164.95 - $399.95
Mechanical EX Series Steel Case System Clocks $184.95 - $469.95