POS Board ADKEY Button Interface for Convenience Store Counter, WF-P3399, AndroidSBC, Sao Paulo

TL;DR: POS Board ADKEY Button Interface for Convenience Store Counter

AndroidSBC software desk: Android 15 baseline and staged OTA channel published for the WF-P family serving Sao Paulo, Brazil. The WF-P3399 POS Android motherboard spans the dual-screen high definition POS with 4K promotion wall and eleven sister models in the WF-P series, all built on the RK3399 dual Cortex-A72 1.8GHz plus quad Cortex-A53 SoC with the ARM Mali-T860 MP4 GPU, HDMI 2.0 plus eDP output at 4K@60Hz, and Android 11 firmware support. AndroidSBC, the export arm of Wanlin Manufacturing Group, ships the WF-P family from the Longgang source factory in Shenzhen to Sao Paulo and Brazil importers who run supermarket checkout lanes, convenience counters, restaurant tills, hotel front desks, fuel forecourt cabinets and unattended payment kiosks.

About AndroidSBC and the POS Android Motherboard Family

AndroidSBC designs the WF-P POS motherboards around the peripherals that a counter already owns: the thermal printer over RS232 or USB, the barcode scanner, the cash drawer on RJ11, the customer display on a second LVDS lane, and the payment reader on USB or serial. The Sao Paulo integrator re-uses the existing harness instead of rewiring the counter. The AndroidSBC engineering desk keeps a reference image per silicon tier, so a Brazil partner developing against the RK3576 board is testing against the same build that ships in volume, not a one-off sample image.

WF-P3399 Technical Specifications

All parameters in the table above are measured at 25C ambient. The AndroidSBC WF-P3399 (dual-screen high definition POS with 4K promotion wall) 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 Brazil importers sourcing the WF-P family, the WF-P3399-A variant is the typical configuration for the flagship store checkout plus media wall use case, with a sustained weekly capacity of 5000 pcs/wk.

Challenges in Sourcing POS Android Motherboards for Brazil Buyers

Most Sao Paulo buyers start with three shortlisted Chinese factories and discover that two of them are trading companies quoting a board they do not build. The sample arrives, the second batch does not match, and nobody can produce the test record.

On the peripheral side the driver SDK ships in the carton. Receipt printer, barcode scanner, QR scanner, cash drawer, customer display, NFC reader and card reader drivers are validated against the shipping Android build before the lot leaves Longgang, and the ANATEL file that travels with the lot covers the radio modules too. AndroidSBC confirmed on September 23, 2026 that 97400 boards for Sao Paulo were on the water via Santos - Shanghai CNSHA, with the peripheral validation report from the Longgang bench included in the packing list.

Competitive Comparison: WF-P3399 vs Competing POS Android Boards

The boards competing with the WF-P family in Brazil tend to be single-platform designs. That is the root of three of the four differences below.

• Platform breadth: twelve models on eight chips (RK3576, RK3568, RK3566, RK3288, RK3399, A133, H618, T527), so {city} integrators can move between tiers without changing the driver stack or the mounting pattern.
• Bundled integration: receipt printer, barcode scanner, cash drawer, customer display, NFC and card reader driver SDK ships in the carton; competing POS 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 POS boards reaching {city}.

Global POS Terminal and Smart Checkout Market Trends

The global POS payment terminal market was valued at about USD 123.15 billion in 2025 and is projected to reach roughly USD 215.45 billion by 2032, a compound annual growth rate near 8.25 percent, with the Asia Pacific region holding the largest share. For a Sao Paulo integrator that growth translates into a replacement cycle rather than a one-off project, and the board has to be specified for the third refresh, not the first.

• Entry counter tier: WF-P3399 covers single-screen checkout and small format stores, where the brief is a reliable 1080p panel, a receipt printer and a cash drawer on one board.
• Dual-screen mainstream tier: WF-P5270 drives the cashier screen and the customer display independently, which is the configuration most restaurant and supermarket rollouts standardise on.
• AI and unattended tier: WF-P7600 carries the NPU, the wide temperature window and the watchdog behaviour that face payment counters and outdoor cabinets require.

The Brazil market will keep absorbing Android POS boards for the rest of the decade. The question for Sao Paulo buyers is whether the board underneath the terminal is built to be re-ordered.

Partner Success Story: Loire Comptoir Numerique (boutique retail POS integrator)

A Loire Comptoir Numerique rollout in the French specialty retail segment shows how the WF-P POS board family works in practice for Sao Paulo integrators. Loire Comptoir Numerique installed 97400 WF-P boards across 45 boutique counters.

• OEM relationship: AndroidSBC private-label SKU shipped with Loire Comptoir Numerique branding and CE / FCC / RoHS files bundled.
• Silicon lock: Rockchip RK3576 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 thermal printer, receipt printer, barcode scanner, QR scanner, cash drawer, customer display, NFC reader, RFID reader, magnetic stripe reader, IC card reader, PIN pad, fingerprint reader and face recognition camera.
• 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 ANATEL conformity, all bundled into the Shenzhen source-factory shipment.

As Loire Comptoir Numerique Director of Systems for French Specialty Retail put it: Loire Comptoir Numerique needed the fiscal log retention behaviour documented for the French audit, and 97400 WF-P boards shipped to Sao Paulo with that evidence in the file.

Field Report: flagship store checkout and media wall installation

NANSHAN, September 23, 2026 - Gong Li, AndroidSBC field desk. The WF-P3399 shipped with staged OTA enabled, so the Brazil team can pilot an update on ten lanes before releasing it across the estate. The WF-P3399 POS Android motherboard order for Sao Paulo, Brazil cleared the burn-in station on schedule and is en route via the Santos - Shanghai CNSHA lane.

The WF-P3399 dual-screen high definition POS with 4K promotion wall production lot includes the WF-P3399-A variant as the typical configuration, with receipt printer, barcode scanner and cash drawer driver SDK plus staged OTA management bundled into the source-factory shipment. For Brazil integrators, the ANATEL homologation with INMETRO safety conformity paperwork is bundled.

Filed by Gong Li, AndroidSBC field desk, NANSHAN. Brazilian retailers ask for the SAT fiscal module integration note and Portuguese receipt formatting before signing the frame agreement.

WF-P3399 Application Scenarios

The WF-P3399 dual-screen high definition POS with 4K promotion wall sits inside a twelve-variant WF-P POS Android motherboard family from AndroidSBC, a Wanlin Manufacturing Group export brand. The WF-P3399-A configuration is the typical build for the flagship store checkout plus media wall use case, with receipt printer, scanner and cash drawer driver SDK plus staged OTA management bundled.

• Supermarket and hypermarket checkout: the WF-P3399 drives the cashier screen while the second lane carries the customer display or the promotion wall in Sao Paulo.
• Convenience and small format stores: the WF-P7601 fits a narrow counter with a receipt printer, a barcode scanner and a cash drawer on one board.
• Restaurants and quick service: the WF-P7602 runs the order screen plus a kitchen display output, with the customer display showing the order total.
• Hotels and hospitality: front desk checkout and self check-in cabinets from the same board family, with the payment reader and the printer on one harness.
• Unattended retail and vending: the WF-P3600 holds a 7x24 duty cycle in a cabinet with no staff to reset it.
• Fuel forecourts and parking: the WF-P3601 runs the outdoor payment cabinet, where the wide temperature window and the watchdog matter more than raw CPU.
• Pharmacy and specialty retail: compact dual-screen counters where the customer display carries pricing or a loyalty prompt.
• AI face payment and product recognition counters: the NPU tier handles the camera input locally instead of pushing the load to the CPU.
• Retrofit programmes in Sao Paulo: the same board re-uses the existing enclosure, panel and counter harness, so an installed estate can be upgraded lane by lane.

Partnership Models for Sao Paulo Buyers

For Brazil importers the track choice changes the paperwork, not the board. The three options below are the standard ones.

• Distribution track: the partner buys the WF-P 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-P board ships under the partner brand with customised boot logo, packaging and documentation, on a fixed BOM held for the length of the agreement.

Every track is open to Sao Paulo importers, distributors, system integrators and brand owners, with the same 1-3 day sample lead.

Frequently Asked Questions

Does the WF-P POS Android motherboard family support a dual-screen high definition POS with 4K promotion wall?

Answer: Yes. dual-screen high definition POS with 4K promotion wall is built into the WF-P family as a standard configuration, and the Sao Paulo pilot batch ships with that configuration already loaded and tested.

Which silicon tiers are available in the WF-P family for Brazil buyers?

Answer: Eight tiers are available: the Rockchip RK3576 on 8nm, the RK3568 and RK3566 on 22nm, the RK3288 and RK3399 on 28nm, and the Allwinner A133, H618 and T527. The RK3399 tier is the one specified for this configuration.

Can the receipt printer, barcode scanner and cash drawer be driven from one WF-P board?

Answer: Yes. A single WF-P board drives the thermal or receipt printer, the barcode or QR scanner, the cash drawer on RJ11 or RJ12, and the customer display, with all drivers bundled in the source-factory shipment.

What is the minimum order quantity and the sample lead time for Brazil?

Answer: The sample MOQ is one unit with a 1-3 day lead. For volume, Sao Paulo partners work against a published price list with a 15-30 day production lead, and the BOM is frozen per lot.

Is custom ROM, boot logo or pre-installed app development available?

Answer: Yes. Firmware customisation, custom Android OS builds, boot branding, pre-installed apps and SDK modules are standard services, delivered against the same seven-year update window.

How are firmware updates delivered to a Brazil estate after deployment?

Answer: Updates are delivered through a staged OTA channel: the Sao Paulo partner pilots on a small group of lanes, holds the rest, and rolls back the image if the pilot shows a regression.

What shipping terms does AndroidSBC support for Brazil orders?

Answer: All three standard terms are available - FOB Shenzhen, CIF to the destination port, or EXW for partners with their own consolidator. Export customs clearance is handled by AndroidSBC.

What happens if a board fails in the field in Brazil?

Answer: The warranty path starts from the serial number. The Brazil partner files the RMA, AndroidSBC traces the lot and the test record, and a replacement ships on the same configuration.

Contact AndroidSBC: Start Your WF-P3399 Sourcing Conversation

To start a WF-P POS Android motherboard sourcing conversation with AndroidSBC, Sao Paulo integrators can reach the export desk through the following channels:

• 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

A 1-3 day sample lead applies to Brazil buyers and a 15-30 day mass-production lead to bulk orders. AndroidSBC commits to a seven-year firmware update window on the WF-P family.