The "24 Volt" specification refers to the voltage required to power the clock. In many cases, these clocks are designed to operate on a 24-volt electrical system, which is common in certain industrial environments. This voltage requirement ensures that the clock can be integrated into the existing electrical infrastructure without the need for additional voltage conversion equipment.

Synchronous clocks, in general, are designed to maintain accurate time by synchronizing with a central time source. This can be achieved using various methods, such as receiving regular time updates through wired connections or wireless signals. In the context of a 24 Volt synchronous wall clock, the clock would likely receive its timekeeping signal and power supply from a centralized system that provides both the accurate time reference and the necessary electrical power.

These clocks are often found in places like factories, warehouses, schools, hospitals, transportation hubs, and other large facilities where maintaining synchronized time across different areas is important for operations and coordination.

It's worth noting that technology and product specifications can evolve over time, so for the most accurate and up-to-date information about a specific product, you should refer to the manufacturer's documentation or product details.