Know your Simplex clock system replacement options.

Our AllSync Plus^® replacement systems are best in class.

American Time manufactures system secondary replacements for Simplex clocks, including wired synchronous and 24vdc minute impulse correction.

Our AllSync Plus replacement clocks offer a 3-year warranty and use a solid state circuit board movement instead of the traditional mechanical movement and use up to 80 percent less energy. We also offer Simplex digital clock replacements for many models (ex. Simplex 2310-9200 or Simplex 6310-9200), which can function as a complete system or as an add-on to several major brand systems.

If you’re not sure what Simplex clock replacement is best for you, our dedicated team of professional clock experts can help you navigate our Simplex replacement clock systems and parts to find your solution.

The benefits of working with American Time: 

• Avoid stress: Our replacement clocks are designed for easy installation
• Save money: Our AllSync Plus replacement clocks allow you to run up to 5 times more clocks without installing boosters
• Gain quality: Our upgraded digital and analog clocks are more durable, reliable and easy to read

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The Simplex Company, which was one of the largest manufacturers of Simplex wall clocks, was founded by Edward G. Watkins in 1888. 70 years later, Simplex acquired the International Business Machines Corporation’s (IBM) Time Equipment Division. In the early days of the wall clock, Simplex wall clocks were widely used in public buildings, business offices and schools throughout the 19^th-20^th centuries. Many remain in operation in schools today.

What’s different about Simplex clocks?

What sets a Simplex clock apart from a traditional wall clock is its mechanical makeup. Simplex clocks, otherwise known as secondary clocks, are coordinated with a master clock that keeps time for all of the Simplex clocks that are on its system. The master clock sends a signal, telling the other clocks to advance simultaneously so they remain synchronized. The development of a synchronized time system was monumental for timekeeping around the world.