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I. Analysis of Four Core Pain Points in the Digital Signage Industry (1) Network Congestion & Transmission Lag: The "Chokepoint" of HD Content Playback ​​Scenario Challenges​​: In crowded environments like malls and exhibitions, traditional Wi-Fi 5 modules struggle with 4K/8K video streaming and dynamic ads due to congested 2.4GHz bands and single-stream limitations, leading to buffering, timeouts, poor user experience, and brand reputation damage. (2) Inefficient Multi-Device Connectivity: Network Collapse in High-Density Scenarios ​​Scenario Challenges​​: In large commercial spaces, traditional modules lack multi-device coordination, causing "channel competition" among digital signage, smart speakers, and cameras. This results in disconnections or delays (e.g., >2s touch response during promotions), severely degrading user interaction. ​​Example​​: A retail chain loses ~15% potential customer conversion annually due to ad playback interruptions. ​​Example​​: Traditional modules see network throughput drop below 30% of nominal capacity with 20+ concurrent devices. (3) Limited Functionality & Expansion: Stagnant "One-Way Display" Interaction ​​Scenario Challenges​​: Legacy systems rely on wired peripherals (speakers/sensors), incurring high cabling costs. Low Bluetooth versions (e.g., 4.2) restrict transmission range and stability, hindering innovations like NFC marketing (e.g., coupon pushes) or device synergy (e.g., signage-shelf sensor integration). (4) Compatibility & Upgrade Costs: Legacy vs. New Systems at Odds ​​Scenario Challenges​​: Legacy models (e.g., 5-year-old systems) predominantly use Wi-Fi 4 (802.11n) protocols.New modules often face backward compatibility issues, forcing full hardware replacements and escalating costs. Proprietary sensors exacerbate "system silos" due to poor protocol adaptation. ​​Example​​: Bluetooth-enabled signage boosts user engagement by 40% vs. traditional models. ​​Example​​: A certain company upgrades 1,000-device,it incurs 30% extra costs due to compatibility issues. II. O9201SB Module: Targeted Solutions for All Four Pain Points (1) Dual-Band Wi-Fi 6 + Smart Anti-Interference: Unleashing HD Content ​​Solutions​​: ​​Dual-Band Concurrency & Dynamic Switching​​: Combines 2.4GHz (wide coverage) and 5GHz (high-speed) bands, achieving 1200Mbps via 802.11ax. Smart interference detection auto-switches to optimal channels. ​​OFDMA + MU-MIMO​​: Divide the channel into multiple sub-channels and allocate dedicated transmission resources for 20+ digital signage players simultaneously, boosting throughput by 200% to eliminate bandwidth contention caused by massive concurrent access. (2) Bluetooth 5.4 + Coexistence Tech: Zero-Latency Wireless Interaction ​​Solutions​​: ​​Bluetooth 5.4​​: Data rate increased to 2Mbps，range extended to 100 meters,supports LE Long Range mode,Maintains stable connections to Bluetooth devices (e.g. speakers, game controllers) beyond 50 meters,Dual-mode (LE + BR/EDR) simultaneous operation to ensure zero interference between low-power sensors and high-speed data transmission. ​​ Wi-Fi/Bluetooth Coexistence Engine​​: Through hardware-level signal isolation and time-division scheduling technology, interference between the two in the 2.4GHz band is avoided. In actual coexistence testing, Wi-Fi throughput loss remains below 5%, while Bluetooth latency is kept under 20ms. (3) Ultra-Compact Size + Full Protocol Support: Seamless Legacy Upgrades ​​Solutions​​: ​​13×15×2.3mm Compact Design ​​: The module's compact design occupies only 1/3 the volume of conventional modules, enabling direct integration into legacy digital signage's confined spaces without mechanical modifications. This all-in-one solution combines Wi-Fi, Bluetooth, and antenna into a single unit, replacing traditional three-component setups—reducing hardware costs by 40% and failure rates by 60%. ​​"Time Machine" full-Protocol Mode​​: Fully compatible with the complete IEEE 802.11 a/b/g/n/ac/ax protocol family, enabling seamless interoperability with Wi-Fi 4/5 routers and Legacy digital signage motherboards. This backward-compatible solution eliminates the need to replace existing network equipment during upgrades, preserving over 90% of legacy system investments. III. From Hardware to Service: Full-Cycle Industry Empowerment Qogrisys Technology delivers not only high-performance modules, but also provides end-to-end solutions backed by our expert engineering team. ​​Worry-Free After-Sales Service:24/7 technical support with real-time troubleshooting and firmware updates to ensure uninterrupted digital signage operation year-round. IV. Three Core Reasons to Choose O9201SB ​​Precision Solutions for Industry Pain Points:We deliver integrated "Technology + Scenario" packages that specifically target the four core challenges of digital signage – far surpassing generic module capabilities. ​​Cost Efficiency​​: Using local chipset WQ9201,you will see 40% lower hardware costs, 60% reduced maintenance, ROI within 3 months. ​​Expert Support​​: Qogrisys’s technical team assists R&D and software integration. ​​Choosing O9201SB​​ transforms digital signage into a ​​smart marketing super gateway​​—Qogrisys's self-developed module is revolutionizing the digital signage industry by overcoming critical bottlenecks and ushering in a new era of Speed, Stability and Intelligence from rock-solid performance in high-density deployments, to expanded interactive capabilities, through total lifecycle cost optimization.

 In the field of commercial display terminals, efficient network connectivity and functional integration are crucial to device performance and user experience. The O8852PM module, independently developed by QOGRISYS, brings significant advantages to commercial display terminals, effectively addressing many industry pain points. I. Advantages of O8852PM in Commercial Display Terminals (1) Powerful Wireless Connectivity Dual-Band Support & High-Speed Transmission: The O8852PM supports 2.4GHz and 5GHz dual bands, adapting flexibly to different scenarios. In environments with dense commercial displays, the 2.4GHz band offers wider coverage, ensuring reliable basic connectivity, while the 5GHz band (with less interference and higher speeds) enables smooth display of HD videos and real-time data interaction. Under the 802.11ax protocol, the 5GHz band achieves speeds up to 1200Mbps (5G HE80 2T2R), ensuring seamless content delivery and fast loading. It eliminates buffering to improve audience engagement. Multi-Protocol Compatibility: Supports IEEE 802.11 a/b/g/n/ac/ax, ensuring seamless connectivity with devices of different generations and standards. It eliminates network compatibility concerns during upgrades, reducing costs of devices upgrading, and extending the lifespan of commercial display terminals. Multi-User MIMO Technology: Equipped with Multi-user MIMO (Multiple Input Multiple Output) technology, the module ensures stable connections for multiple commercial display terminals simultaneously in high-density environments such as shopping malls and exhibitions. This significantly enhances network capacity and efficiency, enabling each terminal to operate independently and optimally while preventing network congestion caused by excessive connected devices.   (2) Bluetooth Integration Advantages Bluetooth 5.2 protocol Support: With an integrated Bluetooth 5.2 USB controller, it offers faster speed, longer range and more power efficiency versus old versions. Supports peripheral connections (speakers/keyboards/mice) for audio and interactive control.For instance, in conference presentation scenarios, wireless keyboards and mice can be connected via Bluetooth, allowing presenters to effortlessly operate the display terminal for content showcasing and annotation. Dual-Mode Support & Coexistence Control: Supporting dual mode (Simultaneous LE and BR/EDR), it concurrently satisfies both low-power and high-speed data transmission requirements. The enhanced BT/Wi-Fi coexistence control technology effectively prevents mutual interference between Bluetooth and Wi-Fi signals, ensuring stable operation of commercial display terminals when utilizing both wireless functions simultaneously. For instance, it maintains uninterrupted Wi-Fi video streaming while simultaneously supporting Bluetooth-connected control devices.   (3) Other Advantages Compact & Highly Integrated Design: With compact dimensions of 30×22×2.3mm, the module's space-saving design enables easy integration within the limited internal space of commercial display terminals. Its minimal footprint allows manufacturers to develop slimmer and more compact products. Furthermore, the highly integrated single-module design reduces the number of external components, lowering hardware costs and failure risks while significantly enhancing product reliability.   Versatile Interface Support: The Wi-Fi interface utilizes PCIe for high-bandwidth, high-speed data transfer, making it ideal for rapid transmission of large data volumes in commercial displays - particularly real-time HD video streaming. Meanwhile, the Bluetooth interface employs USB connectivity, offering universal compatibility for seamless integration with various external Bluetooth devices to facilitate functional expansion of commercial display terminals. II、Solve Industry Pain Points (1) Unstable Network Connectivity Signal Interference & Lag: In environments with dense commercial display deployments—such as shopping malls and office buildings—wireless signals from multiple devices often cause severe interference. The O8852PM's dual-band adaptive frequency selection and coexistence control technology intelligently prioritizes less congested frequency bands to minimize signal conflicts and maintain network stability. For instance, in supermarket where numerous displays terminals simultaneously broadcast advertisements and promotions, the O8852PM effectively prevents video stuttering and slow loading caused by signal interference, ensuring accurate and timely message delivery to consumers. Network congestion with multiple device connections: As the number of commercial display terminals increases, traditional network equipment is prone to congestion when handling multiple connections. The Multi-user MIMO (MU-MIMO) technology in the O8852PM significantly enhances concurrent network processing capability, ensuring each commercial display terminal receives stable network resources and improving overall network performance. ​   (2) High Costs & Space Constraints from Low Integration High Costs: Traditional commercial display terminals required separate procurement of multiple components (e.g., Wi-Fi modules, Bluetooth modules) to achieve diverse functionalities, driving up both purchasing cost and assembly costs. The O8852PM integrates Wi-Fi and Bluetooth functionalities into a single highly compact module, significantly reducing component count. This consolidation lowers procurement expenses and streamlines production assembly costs, ultimately expanding profit margins for enterprises. Large Space Occupancy: Multiple discrete modules traditionally occupied significant internal space in commercial display terminals, constraining slim-form-factor designs and optimal internal layout planning. The O8852PM's compact footprint (30×22×2.3mm) and integrated architecture leave much more internal space, empowering manufacturers to optimize thermal management solutions, streamline cable routing configurations, enhance overall product performance through space-efficient engineering. ​   (3) Devices’Compatibility & Upgrade Challenges Poor Legacy Device Compatibility: The commercial display terminal market contains numerous devices from different generations, where new network modules often struggle to maintain backward compatibility. The O8852PM overcomes this challenge through extensive protocol support, enabling seamless interoperability with legacy equipment. There is no need for large-scale device replacements, significantly reducing upgrade costs for enterprises. Difficult Upgrades: Traditional modules often require replacing multiple components during upgrades, resulting in complex operations and high costs. The O8852PM's unified, integrated design simplifies the process by enabling updates through a single-module replacement. This streamlines upgrades reduces both costs and technical complexity, and allows enterprises to efficiently modernize commercial display terminal functionalities to maintain market competitiveness. ​ Qogrisys's O8852PM delivers a breakthrough solution for commercial display terminals through its superior wireless connectivity, integrated Bluetooth, compact form factor, and multi-interface support. The module not only enhances terminal performance and user experience but also significantly reduces enterprise costs. This innovation stands as a powerful catalyst driving advancement in the commercial display sector.

1. What is PLC? 1.1 Technical Definition PLC (Power Line Communication) is an innovative communication technology that utilizes power lines as a natural transmission medium. By advanced signal modulation techniques, it superimposes high-frequency data signals onto standard power-frequency currents, enabling simultaneous power delivery and data communication. This technology eliminates the need for additional communication cables, it can be deployed directly over existing power lines to establish communication systems—truly achieving the dual functionality of "one wire, two purposes.   1.2 Core Technical Principles Signal Modulation Mechanism: Adopting modulation techniques such as Orthogonal Frequency Division Multiplexing (OFDM) and Phase Shift Keying (PSK) to encode raw data signals into high-frequency carriers (1–30 MHz). This modulation employs frequency-domain superposition to effectively separate high-frequency data signals from 50/60 Hz power-frequency currents, ensuring interference-free transmission between two signals in PLC.     Coupling and Decoupling System: Signal Injection: At the transmitting end, a dedicated coupling device injects high-frequency data signals into the power line safely and efficiently, enabling synchronized transmission of communication signals and power. Signal Extraction: At the receiving end, a bandpass filter system precisely filters out power-frequency, extracting the 1–30 MHz high-frequency communication signals completely, original data is then restored via demodulation.   2. Technical Advantages 2.1 This technology shows significant advantages:First,no rewiring required, drastically reducing the costs of communication system deployment .In the second,it is feasible to achieve Plug-and-play using existing power networks, significantly shortening deployment cycles.Besides,dual-frequency transmission ensures independent operation of power delivery and data communication without mutual interference.   2.2 Technical Advantage Matrix Metric Technical Breakthrough Application Value Wiring Cost Zero additional wiring 80% reduction in installation costs Coverage Natural power line coverage Overcomes wireless signal transmitting limitations Penetration Signals averse walls/floors The stability of communication improves 90% in complex environments Anti-Interference Frequency division + error correction coding Bit error rate below 0.01%   3. Full-Stack Product Ecosystem 3.1 Development Toolchain – S130N-ISI Dev Kit： ▶ Hardware Integration: Includes modules, coupling circuits, and power supply, supporting direct 220V testing. ▶ Preconfigured Software: Built-in localized group management firmware, UART plug-and-play. ▶ Scenario Adaptability: Compatible with 485/UART interfaces for achieving zero-hardware-modification deployment. 3.2 PLC Core Component Specifications Component Specifications Performance Highlights Main Chip VC6330 SoC (ARM Cortex-M3 + DSP) Dual-core, 2MB Flash/1MB SRAM Protocol Q/GDW 11612/IEEE1901.1 Supports BPSK/QPSK/16QAM modulation Environment -40°C to +105°C Industrial-grade protection standard Dimensions 20.6×12.6×2.5mm (stamp hole packaging) 40% smaller than traditional solutions   3.3 Key components' innovations PLCT-500010 Coupling Transformer: ▶ 1:1 turns ratio design, 5000VAC withstand voltage ▶ 1–30 MHz bandwidth coverage, insertion loss ≤3dB ▶ Dual-shielded design, common-mode rejection >40dB Packaging technology Breakthroughs: ▶ Anti-oxidation gold fingers (contact resistance