Product Overview
What is a Digital Standalone Clock?
A Digital Standalone Clock is a wall mount LED time display that keeps its own time using an internal timekeeping circuit, without needing a master clock, GPS receiver, or network connection. Ace Instruments builds these clocks for facilities that want a bright, easily readable time display in one or more locations without the cost and setup of a synchronized clock network.
Each clock uses a super bright red 7 segment LED panel to show hours, minutes, and seconds in HH:MM:SS format, with a 24 hour display standard and a 12 hour option available on request. Time is set and corrected using a wireless IR remote supplied with the unit, so installation and adjustment do not require opening the enclosure or running any communication cabling. The internal circuit holds accuracy to within plus or minus 60 seconds per year, which is well suited to offices, factories, schools, hospitals, warehouses, and other spaces where a dependable, self contained time display is all that is needed.
The range is available in three display heights, AI-CL1 at 1 inch, AI-CL2 at 2.5 inches, and AI-CL4 at 4 inches, so the digit size can be matched to the viewing distance and layout of the installation area. Every model runs on a standard 230V AC supply stepped down to 12V DC through the supplied adapter, and installs on any normal power point. For facilities that need every clock across a building or campus to show identical, continuously synchronized time, Ace Instruments' GPS and Ethernet synchronized clock ranges are the better fit. For a single room or a small number of independent locations, the Digital Standalone Clock is the simpler and more economical choice.
Salient Features
Built to run on its own
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Fully Standalone
No master clock, server, or GPS connection required. The clock keeps its own time internally.
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Wireless IR Remote
Set or correct the display without opening the enclosure or wiring into the unit.
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Three Display Sizes
1 inch, 2.5 inch, and 4 inch high 7-segment LED digits to match viewing distance across a room, hall, or shop floor.
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Super-Bright Red LEDs
Readable in daylight and from a distance.
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24-Hour Format Standard
HH:MM:SS display as standard, with 12-hour format available as an option.
±
60 Seconds Per Year
Accuracy from the internal timekeeping circuit.
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Standard Power Input
230V AC stepped down to 12V DC through the supplied adapter. Installs on any normal power point.
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Simple Installation
Single unit installation, no communication cabling or network configuration needed.
Available Models
Three sizes, one display format
All models display hours, minutes, and seconds in HH:MM:SS format on a super-bright red 7-segment LED panel.
AI-CL1
AI-CL2
AI-CL4
| Model | Display Height | Format |
|---|---|---|
| AI-CL1 | 1″ high, 6 digit display | HH:MM:SS |
| AI-CL2 | 2.5″ high, 6 digit display | HH:MM:SS |
| AI-CL4 | 4″ high, 6 digit display (2.5″ for seconds digits) | HH:MM:SS |
Applications
Wherever a room needs its own clock
Factory Shop Floors & Workshops
A large, bright standalone display gives shift workers a clear time reference without needing a networked clock system.
Offices, Reception Areas & Lobbies
A simple wall mounted digital clock that needs no installation beyond a power point.
Warehouses & Godowns
A durable LED display suited to large open spaces where wall clocks need to be readable from a distance.
Railway Platforms, Bus Stations & Waiting Areas
Single point installations where a synchronized network isn't required.
Schools, Colleges & Training Institutes
Classroom and corridor clocks that are simple to set and maintain.
Hospitals & Clinics
Corridor and ward clocks where an independent, easily reset display is preferred over a networked system.
Retail Stores & Showrooms
A visible standalone clock for customer facing areas.
Small & Medium Plants
A lower cost alternative to a master slave clock network where individual room level time display is sufficient.
Compliance & Certifications
Built to a documented quality standard
- Manufactured by Ace Instruments, an ISO 9001:2015 and CE compliant manufacturer, under a documented quality management system covering design, assembly, and final testing.
- Each unit is power tested before dispatch to confirm LED segment operation, digit display, and time accuracy across the full HH:MM:SS range.
- Suited to general indoor and covered outdoor commercial and industrial installations. This is a general purpose display clock rather than a hazardous area rated product.
Need a hazardous area rating? For explosion protected environments, see Ace Instruments' CIMFR, Dhanbad certified Digital Flameproof Synchronized Clocks range instead.
FAQs
Frequently asked questions
What are Digital Standalone Clocks?
Electronic digital clocks designed to display accurate time without requiring a master clock, GPS synchronization, or network connection. Suitable for offices, factories, schools, hospitals, commercial buildings, reception areas, and other locations where a clear and reliable time display is required.
How does a standalone digital clock work?
The clock operates independently using its internal timekeeping system. The required time is set using the supplied wireless IR remote, after which the clock continuously displays the time without needing synchronization with another clock or external time source.
What time format does the clock display?
The standard display uses a 24-hour format. An optional 12-hour format can also be provided depending on the application requirement.
How is the time programmed?
Using the wireless IR remote provided with the clock. This lets you set or adjust the displayed time without opening the clock enclosure.
How accurate is the Digital Standalone Clock?
The specified accuracy is ±60 seconds per year, suitable for applications where a reliable time display is required without continuous external synchronization.
What display sizes are available?
Three configurations, chosen by viewing distance and installation location:
- AI-CL1: 1 inch high 7-segment LED display
- AI-CL2: 2.5 inch high 7-segment LED display
- AI-CL4: 4 inch high display configuration
Does the clock display seconds?
Yes. All available configurations display hours, minutes, and seconds in HH:MM:SS format.
Is the LED display easy to read from a distance?
Yes. The clocks use super-bright red 7-segment LED displays for clear visibility in indoor areas where the time needs to be read quickly. The larger display options suit locations that need visibility from a greater distance.
What power supply is required?
A standard 230V AC supply through the supplied 230V AC to 12V DC power adapter.
Where can Digital Standalone Clocks be installed?
Typical applications include offices, factories, schools and colleges, hospitals, reception areas, commercial buildings, production areas, warehouses, control rooms, and institutional buildings. Display size is selected according to viewing distance and installation area.
What is the difference between a standalone clock and a synchronized clock?
A standalone clock operates independently and is manually programmed using its remote. A synchronized clock system receives its time from a master source such as GPS, Ethernet, or another synchronization network and distributes the same time to multiple clocks. A standalone clock suits applications where independent time display is needed without facility wide synchronization.
When should I choose a standalone clock instead of a GPS synchronized clock?
When only one or a small number of independent clocks are required and exact synchronization between locations isn't necessary. For facilities where every clock must continuously display identical time, a GPS or network synchronized clock system is the better fit.
Can the clock be used in industrial environments?
Yes, in suitable indoor industrial locations where a clear digital time display is required. For hazardous areas requiring certified flameproof equipment, choose a dedicated flameproof synchronized clock instead.
What are the advantages of using a Digital Standalone Clock?
Independent operation, easy wireless time programming, a super-bright LED display, multiple display size options, HH:MM:SS time display, 24-hour standard format with optional 12-hour format, ±60 seconds per year accuracy, simple power connection, and easy operation and maintenance.
Who typically uses Digital Standalone Clocks?
Organizations and facilities that need a highly visible digital time display, including offices, factories, hospitals, educational institutions, warehouses, commercial facilities, and production areas.
How do I choose the right Digital Standalone Clock?
Selection mainly depends on required display height, viewing distance, time format, installation location, and whether independent or synchronized operation is needed. Our application team can help you select AI-CL1, AI-CL2, or AI-CL4 based on your application and visibility requirements.
Need a display sized for your space?
Talk to our application team about AI-CL1, AI-CL2, and AI-CL4 clocks.