The answer lies in Power over Ethernet (PoE) technology, which allows a single Ethernet cable to transmit both data and power. This technology makes it possible to connect and power two clocks using just one Ethernet cable, simplifying installation and reducing clutter. Let's take a deeper look into how this works.

Power over Ethernet (PoE) is a technology that enables Ethernet cables to carry both data and electrical power simultaneously. This eliminates the need for separate power cables and outlets, making it especially useful for devices like IP cameras, wireless access points, and clocks that need both data connectivity and power.
PoE is governed by standards such as IEEE 802.3af and IEEE 802.3at, which define how power is delivered through the Ethernet cables. It can provide power to devices up to a distance of 100 meters, making it a versatile solution for networked environments.
The process is relatively simple and involves the use of a PoE extender. A PoE extender is a device that takes the power and data from a single Ethernet cable and splits it into multiple outputs.
Here’s a step-by-step explanation of how the setup works:
PoE Switch and Ethernet Cable:
The PoE switch is connected to your network and provides power and data over a single Ethernet cable. The Ethernet cable is plugged into the PoE IN port of the PoE extender.
PoE Extender:
The PoE extender receives the Ethernet cable’s power and data. It then splits this signal into two separate outputs: PoE OUT1 and PoE OUT2.
Connecting the Clocks:
Two digital clocks are connected to the PoE OUT1 and PoE OUT2 ports of the PoE extender using additional Ethernet cables. Each clock now receives both power and time data, ensuring they are synchronized and operational.
Synchronized Clocks:
Both clocks are now receiving power and time data through the Ethernet cable, and they remain synchronized to the same time source, whether it’s from a NTP server (Network Time Protocol) or GPS signals. As long as the network remains active, both clocks will show the same time.
Simplicity and Clean Setup:
Using PoE technology allows you to reduce the number of cables required for installation. Instead of running separate power cables to each clock, a single Ethernet cable powers both devices, streamlining the installation process.
Reduced Wiring Costs:
With one Ethernet cable handling both power and data, you save on the cost and time needed for running additional power lines. This is particularly beneficial in large-scale installations, where multiple clocks are required across different rooms or floors.
Flexible Placement:
PoE technology allows clocks to be installed in locations where power outlets may not be available. The ability to use a single Ethernet cable means clocks can be placed wherever network connections exist, without being limited by the availability of power outlets.
Centralized Time Management:
Since both clocks receive time data from the same source (NTP or GPS), they will always be synchronized, eliminating the risk of time discrepancies. This is crucial in environments where precise timekeeping is necessary, such as factories, hospitals, and schools.
Scalability:
As your organization grows and you need to install additional clocks, you can easily expand the system by adding more PoE extenders. This scalability makes PoE clocks a flexible solution for future growth.
Hospitals: In a hospital, accurate time synchronization is critical for scheduling procedures, administering medications, and coordinating staff shifts. PoE clocks ensure that every part of the hospital operates on the same time, improving efficiency and reducing errors.
Schools: For educational institutions, synchronized clocks are essential for class schedules, breaks, and activities. PoE-powered clocks make it easy to install timekeeping devices in every classroom without needing separate power sources.
Factories and Industrial Settings: In factories, precise timing is essential for managing shifts, assembly lines, and other operations. PoE clocks help keep the entire facility on the same schedule.
Offices: For office buildings with multiple departments, synchronized clocks can help ensure punctuality and consistency, particularly in workplaces with strict time management requirements.
The ability to power and synchronize two clocks using just one Ethernet cable is a game-changer for many businesses. With PoE technology, you can simplify installations, reduce cable clutter, and ensure that your clocks are always synchronized to the exact same time.
Whether you are looking to install clocks in a small office or across a large facility, SyncTimeHub offers reliable PoE clock solutions that make time management simple and efficient.
Start simplifying your time synchronization today with SyncTimeHub's innovative PoE clocks!
Back to List