The A-frame digital board upgrades the classic sandwich board with a Full-HD screen that loops video menus, promotions and brand content all day on battery power. Same familiar sidewalk footprint as a chalkboard A-frame - but content changes over Wi-Fi in seconds, never needs printing, and folds flat for overnight storage. 32/43/55-inch models from LumiLink, ready for cafes, restaurants, retail storefronts and events.
Lumi Link re-engineers the most trusted shape in sidewalk advertising. The A-frame digital board keeps the familiar silhouette of the classic sandwich board - stable, visible from both walking directions, instantly recognized by pedestrians - and replaces chalk and print with a 32, 43 or 55-inch Full-HD screen that loops video content all day on a built-in battery.
The counterweighted A-frame base stays planted on pavements and slopes, while the whole unit folds flat at closing time and rolls inside on optional casters. A 50000 mAh blade battery delivers 14 hours of playback between overnight charges, and the IP65 front panel shrugs off rain splashes and street dust. Content updates over Wi-Fi from a phone - breakfast menu in the morning, happy-hour video by afternoon.
As an OEM/ODM manufacturer with 10+ years of display engineering, Lumi Link builds the digital A-frame sign with branded lithium cells, metal load-bearing hinges and a 50,000-hour panel, offering custom sizes, colors and firmware for brands and distributors worldwide.
Sidewalk signage is the highest-traffic advertising slot most local businesses own - and it has been the slowest to modernize. Printed sandwich boards cost $20-40 per print, take days to produce, fade in weather, and can only say one thing until someone reprints them. The A-frame digital board removes every one of those limits.
The market shift is accelerating for three reasons. Pedestrians respond to motion: a looping video menu consistently stops more foot traffic than static print at the same doorstep. Staff time matters: updating a digital board takes seconds over Wi-Fi versus a trip to the print shop. And multi-location brands need consistency - a chain of cafes can push the same campaign to every doorstep from one dashboard.
Battery technology is what finally made it practical: today's lithium cells run a bright Full-HD screen for a full trading day, so the electronic sandwich board needs no cabling, no trenching and no permits for fixed wiring.
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MoreThe A-frame digital board earns its place anywhere pedestrian traffic meets a storefront:
Restaurants & Cafes: sidewalk menus, daily specials and happy-hour promotions that switch automatically by time of day.
Retail & Boutiques: entrance offers, new-arrival videos and flash sales that would never justify a print run.
Hotels & Hospitality: event directions, breakfast announcements and conference agendas at the lobby entrance.
Real Estate: listing videos and open-house invitations that engage passers-by far better than a printed flyer.
Events & Exhibitions: wayfinding and sponsor loops at entrances, folding flat for transport between venues.
Campuses & Hospitals: directory and announcement boards that staff update remotely without tools.
Because the unit runs on battery and folds flat, it goes wherever the crowd is - curb line, terrace, corridor or booth - and stores in a cupboard when not needed.
Familiar A-Frame Silhouette: stable counterweighted base recognized by pedestrians everywhere, working on pavements, slopes and indoor floors.
Battery Powered: 50000 mAh blade battery runs 14 hours - a full trading day - and recharges in about 7 hours.
Full-HD Screen: 1920x1080 panel at 1,800 cd/m² sunlight-readable (2,000 cd/m² on the 55-inch) stays readable even in direct daylight.
Double-Sided Visibility: optional dual-screen configuration engages pedestrians walking in both directions.
Weather-Resistant: IP65 front panel protects against rain splashes and dust for daily outdoor doorstep duty.
Wi-Fi Content Updates: change menus and promos from a phone in seconds; schedule different content by hour and weekday.
Fold & Roll: folds flat in seconds for storage; optional casters let one person reposition the board all day.
Auto Brightness Sensor: dims automatically at dusk to extend battery runtime and reduce light pollution.
Zero Print Cost: unlimited campaign changes on the same 50,000-hour panel - no reprinting, no waiting, no waste.
| Parameter | 32-inch | 43-inch | 55-inch |
|---|---|---|---|
| Panel Type | 32”LED Panel | 43”LED Panel | 55”LED Panel |
| Display Area | 697.8×392.2mm(W×H) | 943×531mm(W×H) | 1209.6×680.4mm(W×H) |
| Aspect Ratio | 16:9 | 16:9 | 16:9 |
| Backlight | Patented modular LED backlight with constant-current driver | Patented modular LED backlight with constant-current driver | Patented modular LED backlight with constant-current driver |
| Resolution | 1080×1920 | 1080×1920 | 1080×1920 |
| Display Colors | 16.7M | 16.7M | 16.7M |
| Brightness | 1,800 cd/m², sunlight-readable | 1,800 cd/m², sunlight-readable | 2,000 cd/m², sunlight-readable |
| Contrast Ratio | 3,500:1 | 3,500:1 | 3,500:1 |
| Viewing Angle | 178°(H) / 178°(V) | 178°(H) / 178°(V) | 178°(H) / 178°(V) |
| Response Time | 5ms | 5ms | 5ms |
| Color System | PAL/NTSC/SECAM | PAL/NTSC/SECAM | PAL/NTSC/SECAM |
| Operating Lifetime | 60,000 hours | 60,000 hours | 60,000 hours |
| CPU | Cortex-A7, 1.2 GHz | Cortex-A7, 1.2 GHz | Cortex-A7, 1.2 GHz |
| Memory | DDR3 1GB | DDR3 1GB | DDR3 1GB |
| Storage | Up to 32GB TF card expansion | Up to 32GB TF card expansion | Up to 32GB TF card expansion |
| Decoding Resolution | Up to 1080P | Up to 1080P | Up to 1080P |
| Operating System | Android 7.1.1 | Android 7.1.1 | Android 7.1.1 |
| Network | 3G/4G, Ethernet, Wi-Fi, wireless peripheral expansion | 3G/4G, Ethernet, Wi-Fi, wireless peripheral expansion | 3G/4G, Ethernet, Wi-Fi, wireless peripheral expansion |
| Video Formats | 30+ formats: AVI, MKV, MP4, MOV, WMV, FLV, TS, 3GP, MPG, VOB etc. | 30+ formats: AVI, MKV, MP4, MOV, WMV, FLV, TS, 3GP, MPG, VOB etc. | 30+ formats: AVI, MKV, MP4, MOV, WMV, FLV, TS, 3GP, MPG, VOB etc. |
| Image Formats | BMP / JPEG / PNG / GIF | BMP / JPEG / PNG / GIF | BMP / JPEG / PNG / GIF |
| USB Interface | 2× USB HOST ports + 2× USB expansion | 2× USB HOST ports + 2× USB expansion | 2× USB HOST ports + 2× USB expansion |
| System Update | USB / SD card / remote OTA update | USB / SD card / remote OTA update | USB / SD card / remote OTA update |
| Battery Technology | Blade battery, long runtime, stable performance | Blade battery, long runtime, stable performance | Blade battery, long runtime, stable performance |
| Charging Time | 7 hours | 7 hours | 7 hours |
| Runtime per Charge | 14 hours | 14 hours | 14 hours |
| Battery Capacity | 40000 mAh | 50000 mAh | 50000 mAh |
| Input Voltage | 24V | 24V | 24V |
| Operating Temperature | -50°C ~ 110°C | -50°C ~ 110°C | -50°C ~ 110°C |
| Storage Temperature | -45°C ~ 80°C | -45°C ~ 80°C | -45°C ~ 80°C |
| Operating Humidity | 10% ~ 90% | 10% ~ 90% | 10% ~ 90% |
| Storage Humidity | 10% ~ 90% | 10% ~ 90% | 10% ~ 90% |
| Power Input | AC100V ~ 240V | AC100V ~ 240V | AC100V ~ 240V |
| Power Consumption | ≤100W | ≤100W | ≤100W |
| Standby Power | ≤3W | ≤3W | ≤3W |
| Color Options | Silver / Grey / White / Black / Red | Silver / Grey / White / Black / Red | Silver / Grey / White / Black / Red |
| Enclosure Material | Galvanized steel + outdoor-grade powder coating | Galvanized steel + outdoor-grade powder coating | Galvanized steel + outdoor-grade powder coating |
| Certification | ISO9001, 3C, FCC, UL | ISO9001, 3C, FCC, UL | ISO9001, 3C, FCC, UL |
| Net Weight | 35Kg | 40Kg | 65Kg |
| Gross Weight | 38Kg | 48Kg | 87Kg |
| Product Dimensions | 990mm×148mm×448mm | 1236mm×148mm×588mm | 1400mm×148mm×756mm |
| Package Dimensions | 1100mm×300mm×600mm | 1350mm×300mm×700mm | 1580mm×345mm×930mm |
Size & Dimensions - engineering drawings with human-scale reference and folded-state footprint for all three models:
An A-frame digital board is the digital version of the classic sandwich board: a floor-standing A-shaped sign whose panel is a Full-HD screen instead of chalk or printed poster. It runs on a built-in battery for 14 hours, updates content over Wi-Fi, and folds flat for storage and transport.
The 50000 mAh blade battery delivers 14 hours of continuous playback - covering a full trading day from opening to close. Recharging takes about 7 hours, and an on-screen indicator shows remaining runtime.
The front panel is IP65-rated against rain splashes and dust, which covers typical doorstep and covered-terrace duty. For fully exposed roadside locations, we recommend the high-brightness outdoor series with IP65 enclosures.
The 43-inch model is available in a dual-screen configuration that engages pedestrians walking in both directions - the configuration proven most effective in sidewalk studies. Single-screen versions are lighter and more economical.
Over Wi-Fi from a phone or laptop in seconds, via USB/TF plug-and-play, or through a cloud CMS that schedules different menus and promotions by hour and weekday across multiple boards.
32, 43 and 55-inch Full-HD models. Dimension drawings with human-scale reference for all three sizes appear in the specifications section above. All models share the same counterweighted A-frame base.
A printed board costs $20-40 per message and takes days to reprint; the digital board changes messages instantly for free. Over a year of regular promotions, most businesses recover the hardware cost from print savings alone - and video content stops more pedestrians than static print.
Yes. The standard 1,800 cd/m² sunlight-readable panel stays crisp even in direct daylight positions. An ambient-light sensor adjusts brightness automatically.
Two years on the full unit plus lifetime technical support. Lumi Link responds to inquiries within 24 hours on weekdays and keeps spare parts available for 5+ years, so screens and batteries are replaceable rather than disposable.
For a street-facing business, the doorstep is the single most valuable advertising slot it owns. An A-frame digital board turns that slot from a static sign into a daily-changing video channel: breakfast menus roll into lunch offers automatically, slow afternoons get flash promotions, and evening events advertise themselves.
The engagement difference is measurable. Motion content on sidewalk screens consistently draws more glances and longer dwell than printed boards at the same position, and a short video demonstrates a dish or product in ways a printed frame never can. More glances at the doorstep translates directly into footfall.
Operations get simpler too. Staff update content from a phone instead of handwriting chalkboards; chains push one campaign to every branch simultaneously; and nothing gets thrown away when a promotion ends. For multi-location brands, a fleet of digital A-frames creates a coordinated street-level media network at a fraction of outdoor advertising rates.
Because an A-frame digital board lives outdoors, gets moved daily and runs on battery, manufacturing quality decides whether it survives one season or five years. Screen suppliers on paper against six criteria:
1. Real factory or reseller. Ask for workshop footage, production capacity and certifications. Resellers cannot control hinge quality, battery cells or firmware - the three things that fail first in the field.
2. Base stability engineering. A sidewalk sign gets bumped. Counterweighted steel bases, tempered glass and anti-glare treatment matter as much as the panel itself; request the wind-stability and tilt test data.
3. Battery cells and safety documents. Branded lithium cells with UN38.3 and MSDS paperwork, plus a battery management board protecting against over-charge, over-discharge and short circuits.
4. True brightness and weather rating. Confirm measured brightness (not panel-theoretical), the IP rating of the enclosure, and the operating temperature range for your climate.
5. Software usability. The best hardware is worthless if updating content requires an engineer. Insist on a free mobile app, scheduled playlists and optional cloud CMS with multi-screen grouping.
6. After-sales commitment. Warranty length, response time and spare-parts availability separate manufacturers from drop-shippers. Two years plus lifetime support is the professional standard.
Lumi Link manufactures in a 5,000 m² facility with in-house aging tests, exports to 50+ countries, and backs every digital A-frame sign with 2-year warranty and lifetime technical support.
Delivering Sunlight-Readable, All-Weather Digital Signage to Global Brands
Established in 2014, Shenzhen Lumi Link Technology Co., Ltd. is a modern high-tech manufacturer focusing on intelligent display equipment. We specialize in professional consoles, digital outdoor advertising screens, and integrated command center solutions for a global client base.
Our core product line covers High-Brightness Outdoor LCD Displays for DOOH advertising, Sunlight-Readable Window Displays for retail storefronts, and durable Outdoor Digital Signage Totems for transit and smart city projects. We also offer bespoke Double-Sided Advertising Screens that maximize visibility from both directions of pedestrian flow.
With ISO 9001 certification and a dedicated R&D team, we provide full OEM/ODM services. From IP65 weatherproof enclosures for coastal cities to 5,000-nit panels for equatorial markets, our digital outdoor advertising screens are exported globally to over 50 countries.
10+ years of industrial experience
1000+ successful project cases
Shipping to 50+ countries and regions
200+ Achievement customers
20+ Technical patents
5000sqm production base
The clearest ROI comparison for a sidewalk business is against the printed sandwich boards it replaces. Take a cafe that changes its board message 50 times a year:
Printed route: 50 prints at $25-40 each plus design changes = $1,250-2,000 annually, with 2-4 days of turnaround that makes time-sensitive offers impossible. Weather destroys prints; staff rewrite chalk daily.
Digital route: one-time hardware investment, then free unlimited updates over Wi-Fi. Breakfast, lunch and dinner menus rotate automatically by schedule, and video content stops more pedestrians at the same doorstep.
On print savings alone, most food-service locations recover the hardware cost within 12-18 months. Adding the footfall uplift from motion content typically shortens payback further - studies of digital menu boards consistently report higher dwell time and purchase intent versus static equivalents.
For agencies and sign shops, digital A-frames also open a recurring-revenue model: sell the screen once, then sell content management as a monthly service across every client location.
A sidewalk screen earns its keep only if updating it is effortless. Lumi Link equips every A-frame digital board with three content-management tiers:
USB plug-and-play: drop MP4 videos and JPG images onto a USB stick and the board loops them - the zero-learning-curve option for single locations.
Wi-Fi mobile app: update one board or a group from a phone in seconds, from inside the shop or across town. Group boards by location and push a new campaign everywhere at once.
Cloud CMS: full scheduling by calendar and weekday, split-screen zones combining video, images and scrolling text, and remote status monitoring across hundreds of boards. Breakfast menus switch to lunch offers automatically at 11:30 - no staff involvement.
An ambient-light sensor dims the panel after dark to save battery, and auto power schedules align screen hours with trading hours. Firmware updates arrive over the air, keeping the boards current without a site visit.
Street furniture must survive weather, transport and daily handling - and the supplier behind it must survive time zones. Lumi Link supports digital A-frame sign customers worldwide:
Export packaging: every board ships in reinforced carton with foam protection; optional flight cases suit rental fleets. Batteries include UN38.3 certification for compliant air and sea freight.
Global logistics: DDP, DAP and FOB terms to 50+ countries; 5-8 day production for standard models and container consolidation for distributor orders.
Effortless deployment: the board works out of the box - unfold, power on, upload content. Most customers are running within ten minutes using the quick-start guide; remote commissioning is available for CMS fleets.
After-sales: 24-hour weekday response, lifetime technical support, and 5+ years of spare parts. Panels and batteries are field-replaceable modules, so maintenance never means scrapping the unit.
Every unit passes a 48-hour aging test before shipping - the same standard applied to LumiLink screens running in 50+ countries today.
Our excellent sales and technical team help your business find the best Rol rate
