TL;DR: Query Terminal Signature Pad Board for Hospital Information Point
AndroidSBC software desk: Android 15 baseline and staged OTA channel published for the WF-K family serving Leipzig, Germany. The WF-K3399 self-service query terminal Android motherboard spans the dual-screen HD query terminal with mirrored display and eleven sister models in the WF-K series, all built on the RK3399 dual Cortex-A72 1.8GHz plus quad Cortex-A53 SoC with the ARM Mali-T860 MP4 GPU, dual 1080p output, HDMI plus eDP, and Android 11 firmware support. AndroidSBC, the export arm of Wanlin Manufacturing Group, ships the WF-K family from the Longgang source factory in Shenzhen to Leipzig and Germany importers who run hospital information points, bank branch lobbies, government service halls, mall directory stations, airport concourses and outdoor query cabinets.
About AndroidSBC and the Self-Service Query Terminal Android Motherboard Family
AndroidSBC is the export brand of Wanlin Manufacturing Group, a Shenzhen board maker that runs self-service query terminal Android motherboard production on its own Longgang lines. The WF-K series covers twelve models across eight silicon tiers, from the RK3588 flagship down to the entry A133 part, so a Leipzig buyer can size a query terminal project without changing suppliers halfway through. Every model is validated on the same burn-in rig in Longgang before it is packed for Germany, and the same rig logs are available on request.
WF-K3399 Technical Specifications
| Parameter | AndroidSBC WF-K3399 (dual-screen HD query terminal with mirrored display) | Industry Average |
|---|---|---|
| Processor | RK3399 dual Cortex-A72 1.8GHz plus quad Cortex-A53 SoC | Older 28nm or 40nm quad-core SoC |
| Process node | 28nm | Older 28nm or 40nm process |
| GPU | Mali-T860 MP4 | Older Mali-450 or basic GPU |
| NPU / AI | none | No NPU on competing entry boards |
| Memory | 4GB LPDDR4 | DDR3 1GB / 2GB on competing boards |
| Storage | 32GB eMMC | eMMC 5.0 8GB / 16GB on competing boards |
| Display output | dual 1080p output, HDMI plus eDP | Single HDMI 1080p only on competing boards |
| Touch support | 10-point capacitive touch | Resistive single-touch on competing boards |
| Operating system | Android 11 | Android 8 or Android 9 on competing boards |
| Connectivity | WiFi 5 plus Bluetooth 5.0 plus Gigabit Ethernet | WiFi 4 plus 10/100M Ethernet on competing boards |
| Query peripherals | Capacitive touch, thermal printer, document scanner, card reader | No bundled touch, printer or scanner driver SDK on competing boards |
| Operating temperature | 0C to 50C | 0C to 40C on competing boards |
All parameters in the table above are measured at 25C ambient. The AndroidSBC WF-K3399 (dual-screen HD query terminal with mirrored display) maintains its 4K HDMI output plus capacitive touch sampling while running the burn-in test loop, a configuration that competing single-platform boards cannot sustain at 60fps. For Germany importers sourcing the WF-K family, the WF-K3399-A variant is the typical configuration for the dual-screen HD mall directory rollout use case, with a sustained weekly capacity of 5000 pcs/wk.
Challenges in Sourcing Self-Service Query Terminal Android Motherboards for Germany Buyers
The Leipzig market asks for query terminals that are simple to service, because a failed unit means a closed service station. That shifts the sourcing question towards board consistency and spare-part continuity in Germany.
Then comes documentation. A Leipzig importer needs the BNetzA evidence trail behind CE marking with BNetzA radio interface registration and the GS mark to clear customs in Germany without holding the shipment at Port of Hamburg for paperwork reasons. For Leipzig the outcome is a repeatable 77400-unit batch, confirmed on September 22, 2026, with the Hamburg - Shenzhen lane booked ahead so Germany sites are not waiting on logistics.
Competitive Comparison: WF-K3399 vs Competing Self-Service Query Terminal Android Boards
For a Leipzig project the comparison is not a single chip benchmark. It is what the board carries into Germany deployment as standard.
- Platform breadth: twelve models on eight chips (RK3588, RK3568, RK3566, RK3288, RK3399, A133, H618, T527), so {city} integrators can move between tiers without changing driver stack or mounting pattern.
- Bundled integration: touch, printer, scanner, card reader, camera and voice driver SDK ships in the carton; competing query boards sold to {city} usually ship a board only.
- Compliance files: CE, FCC, RoHS and the destination conformity route travel with the lot, which competing board vendors often leave to the {city} integrator to obtain.
- Long-term supply: one fixed BOM per production lot and a seven-year firmware window, against the frequent silicon swaps seen on competing query boards reaching {city}.
Global Self-Service Query Terminal / Information Kiosk Market Trends
Query terminals are becoming the default front door for routine information requests. In Germany this is visible in tenders that bundle the dual-screen HD query terminal with mirrored display with identity peripherals and printing, and Leipzig integrators are quoting against those bundles rather than against bare boards.
- Volume shift to board-level sourcing: more integrators now buy the motherboard rather than the finished kiosk, which is why the WF-K3399 and WF-K3601 tiers ship in board form with the enclosure left to the local partner.
- Dual-screen becomes the default: hall display plus touch query on one board is replacing two separate devices, and the WF-K3601 and WF-K3602 configurations address that pattern directly.
- Longer service life expectations: operators now plan five to seven years per query terminal, which favours a fixed BOM such as the WF-K3602 over boards that re-spin silicon between lots.
The direction of travel for Leipzig is towards fewer board variants deployed across more sites, which is exactly the configuration the WF-K series was built around for Germany.
Partner Success Story: Rheinland Auskunft Systeme (municipal information system house)
The Rheinland Auskunft Systeme case in the Germany public sector segment is a working example of how the WF-K family from AndroidSBC supports Leipzig integrators. Rheinland Auskunft Systeme supplied 77400 query boards with site-specific number formats.
- OEM relationship: AndroidSBC private-label SKU shipped with Rheinland Auskunft Systeme branding and CE / FCC / RoHS files bundled.
- Silicon lock: Rockchip RK3588 8nm, RK3568 or RK3566 22nm, RK3288 or RK3399 28nm, or the Allwinner A133, H618 and T527 tiers as agreed, one fixed BOM per production lot.
- Peripheral driver SDK: bundled into the source-factory shipment, covering capacitive touch, thermal printer, receipt printer, document scanner, A4 printer, barcode scanner, QR code, NFC, RFID, card reader, ID reader, face recognition, voice module, speaker amplifier and microphone.
- Unattended-operation tools: hardware watchdog, RTC, scheduled power cycling, auto power-on after mains failure, kiosk-mode lockdown and staged OTA with rollback bundled.
- Compliance paperwork: CE / FCC / RoHS plus BNetzA conformity, all bundled into the Shenzhen source-factory shipment.
Rheinland Auskunft Systeme Leiter Technik for Germany Public Sector noted: Rheinland Auskunft Systeme needed the display board to accept municipal number formats, and the WF-K board handled it across 77400 units installed in Leipzig without a custom firmware fork.
Field Report: dual-screen HD directory query rollout at a shopping mall
BAOLONG, Shenzhen, September 22, 2026 - Meng Yang, AndroidSBC field desk. The WF-K3399 units were packed with the printer and scanner drivers pre-integrated, cutting the on-site configuration load for Germany teams. The WF-K3399 self-service query terminal Android motherboard order for Leipzig, Germany cleared the burn-in station on schedule and is en route via the Hamburg - Shenzhen lane.
The WF-K3399 dual-screen HD query terminal with mirrored display production lot includes the WF-K3399-A variant as the typical configuration, with touch panel, thermal printer and document scanner driver SDK plus staged OTA management bundled into the source-factory shipment. For Germany integrators, the BNetzA conformity plus CE marking with BNetzA radio interface registration and the GS mark paperwork is bundled.
Filed by Meng Yang, AndroidSBC field desk, BAOLONG, Shenzhen. German facilities plan self-service query around fixed counter numbering, so hall display boards have to accept site-specific number formats.
WF-K3399 Application Scenarios
The WF-K3399 dual-screen HD query terminal with mirrored display sits inside a twelve-variant WF-K self-service query terminal Android motherboard family from AndroidSBC, a Wanlin Manufacturing Group export brand. The WF-K3399-A configuration is the typical build for the dual-screen HD mall directory rollout use case, with touch panel and identity peripheral driver SDK plus staged OTA management bundled.
- Hospital and clinic information points: the WF-K3399 drives a touch query station at the entrance while the hall display shows the same information set to waiting visitors in Leipzig.
- Bank and financial branch lobbies: touch query plus counter display from one board, with card reader and ID reader integrated for account and product lookups.
- Government service halls: the WF-K1331 runs tax, social security and real estate information lookup, with printing available on the same board.
- Shopping mall directories: the WF-K6180 serves mall directory and wayfinding lookup, with the advertising screen running an independent content loop.
- Airport and train station concourses: high-brightness information query where the WF-K5270 has to stay readable under strong ambient light.
- Retail and pharmacy price or product lookup: compact stations where the WF-K8800 fits a narrow counter without structural work.
- Outdoor and unheated information cabinets: the industrial tier holds the wide temperature window and 7x24 duty cycle for street-level query points.
- Multi-language public information points: on-screen lookup in more than one language from a single board, with voice assistance where the venue requires it.
- Retrofit programmes in Leipzig: the same board re-uses the existing enclosure, panel and mounting pattern so an installed estate can be upgraded board by board.
Partnership Models for Leipzig Buyers
AndroidSBC structures Leipzig partnerships around how much integration the local partner keeps in house, with Germany projects typically choosing between three levels.
- Distribution track: the partner buys the WF-K board against a published price list, keeps its own stock, and AndroidSBC supplies the driver SDK and compliance files with each lot.
- Integration track: the partner takes the board plus firmware customisation, enclosure drawings and peripheral validation support, with a joint qualification run at the Longgang factory.
- Private-label track: the WF-K board ships under the partner brand with customised boot logo, packaging and documentation, on a fixed BOM held for the length of the agreement.
The tracks are not exclusive of each other, and Leipzig partners commonly run distribution on one product line and private label on another for the same Germany customer base.
Frequently Asked Questions
Does the WF-K self-service query terminal Android motherboard family support a dual-screen HD query terminal with mirrored display?
Answer: Yes, and it is qualified on the same production line as the rest of the family. The dual-screen HD query terminal with mirrored display runs on the WF-K baseline image that Germany buyers receive, so there is no separate integration project.
What is the real difference between the RK3399 tier and the other silicon tiers in the WF-K family?
Answer: The RK3399 tier sits at a specific point on the price-versus-headroom curve. Below it the boards suit single-screen information lookup; above it they support dual-screen independent display and heavier video work, and AndroidSBC documents that mapping for Leipzig buyers.
Can AndroidSBC handle CE / FCC / UKCA / RoHS / REACH paperwork for Germany?
Answer: Yes. Compliance files for Germany are bundled into the source-factory shipment to Leipzig, and AndroidSBC provides the underlying test reports as well as the certificates on request.
What are the MOQ and lead time for a first order of the WF-K self-service query terminal family?
Answer: For Leipzig the entry MOQ is low enough to validate one site before committing to an estate, with 1-3 day samples and a 15-30 day first bulk lead time for Germany.
Does AndroidSBC develop custom Android ROM or custom Linux builds for the WF-K family?
Answer: Yes. Custom ROM work on the WF-K family is scoped per Leipzig project rather than sold as a generic service, which keeps the Germany deliverable tied to a specific deployment.
How are software updates and long-term support handled on the WF-K family?
Answer: Software updates on the WF-K family are staged rather than immediate, with rollback available at each step, which matters when a Leipzig estate is live and Germany sites cannot tolerate an unplanned outage.
Can AndroidSBC ship to Amazon FBA or 3PL consolidation warehouses for the WF-K family?
Answer: Yes. Boards for Leipzig can be routed straight into Amazon FBA or a third-party 3PL in Germany, with the labelling and packing specification confirmed before the lot is packed.
How are RMA and DOA replacements handled on the WF-K self-service query terminal family?
Answer: RMA and DOA units are handled against the production lot, since every WF-K board is logged against its firmware revision and burn-in result before it leaves Shenzhen. Leipzig partners report against the lot number and AndroidSBC matches it to the rig log.
Contact AndroidSBC: Start Your WF-K3399 Sourcing Conversation
AndroidSBC, a Wanlin Manufacturing Group export brand, opens the following channels for the WF-K self-service query terminal family. Leipzig integrators can reach the export desk through:
- Email: Androidsbc@163.com
- Export service hotline: +8613261677119
- Website: https://www.androidsbc.com
- Source factory address: Wanlin Group, Building B, Building 1, Beisida Medical Device Building, 28 Nantong Avenue, Baolong Community, Baolong Sub-district, Longgang District, Shenzhen, Guangdong, China
For Leipzig and Germany the sample lead is 1-3 days and the mass-production lead is 15-30 days. AndroidSBC, a Wanlin Manufacturing Group export brand, commits to a seven-year firmware update window.
