--- title: "갤럭시 키퍼 GK(Galaxy Keeper)" url: "https://maker.wiznet.io/bruno/resellers/--gk-galaxy-keeper/" markdown_url: "https://maker.wiznet.io/bruno/resellers/--gk-galaxy-keeper/md" type: "VAR: Value-Added Reseller Products" author: "bizbuddy" author_url: "https://www.bizbuddy.co.kr/%EA%B0%A4%EB%9F%AD%EC%8B%9C%ED%82%A4%ED%8D%BC" editor: "WIZnet" editor_url: "https://maker.wiznet.io/" original_author: "bizbuddy" original_url: "https://www.bizbuddy.co.kr/%EA%B0%A4%EB%9F%AD%EC%8B%9C%ED%82%A4%ED%8D%BC" published: "2026-08-24" language: "ko" likes: 0 views: 93 comments: 0 source: "WIZnet Makers (https://maker.wiznet.io/)" --- # 갤럭시 키퍼 GK(Galaxy Keeper) > 블루투스 기능 등을 활용, 오프라인 매장에서 스마트폰에 대하여 무선 시건 기능을 제공함으로써 신제품에 대한 자유로운 체험 을 가능하게 하는 무선 보안 시스템입니다. Original author: bizbuddy (source: https://www.bizbuddy.co.kr/%EA%B0%A4%EB%9F%AD%EC%8B%9C%ED%82%A4%ED%8D%BC) ## Article ![](https://maker.wiznet.io/upload/ckeditor5/383111709%5F1787566136%2Epng) [Embedded media](https://www.youtube.com/embed/6TVAcviU6X8) ## How Does Galaxy Keeper Protect Display Smartphones, and Where Does WIZnet's WizFi360 Fit? **BIZBUDDY's Galaxy Keeper is a wireless security system designed for smartphones displayed in offline retail stores. The system combines an in-store controller, a Galaxy Keeper application, and server connectivity, while FCC records show that the Galaxy Keeper Controller, model GK-WL3B001, incorporates a Wi-Fi module derived directly from WIZnet's FCC-certified WIZFI360PA design.** What makes this case particularly useful for a WIZnet reader is the regulatory trail. BIZBUDDY did not merely list WIZnet somewhere in a parts description: before certifying the finished Galaxy Keeper Controller, it obtained FCC ID **2A7KG-WIZFI360PA** through a change of identification from WIZnet H.K. LTD.'s original **2ATUB-WIZFI360PA** authorization. WIZnet's authorization letter states plainly, **“The equipment is electrically identical.”** ### Components **WIZnet WIZFI360PA × 1 — Wi-Fi connectivity.** The Galaxy Keeper Controller FCC cover letter states that model GK-WL3B001 is equipped with FCC ID **2A7KG-WIZFI360PA**. That FCC ID was created on July 7, 2022 through a change of identification from WIZnet H.K. LTD.'s original FCC ID **2ATUB-WIZFI360PA**, granted August 2, 2019. The change-of-ID filing says there was no change in design, circuitry, or construction. **FSC-BT630 Bluetooth module × 1 — Bluetooth connectivity.** The same Galaxy Keeper FCC cover letter states that the controller also contains **2A7KGFSC-BT630**, giving the system separate Bluetooth and Wi-Fi radio functions. The public FCC records identify the radio modules and their certification configuration, but the schematic, detailed block diagram, operational description, and parts list for the finished controller remain metadata-only rather than publicly viewable exhibits. ### Retail Security Without Tethering the Smartphone to a Cable BIZBUDDY describes Galaxy Keeper, or GK, as a wireless security system for smartphones in offline stores. Its website states that Bluetooth and related wireless functions are used to provide a **“무선 시건 기능”** — literally a wireless locking/security function — so customers can freely experience display products. That usage model distinguishes Galaxy Keeper from a conventional physical display tether. The retail phone itself runs the **GK App**, while an in-store **GK Controller** manages the installation and communication environment. BIZBUDDY separately describes a **GK Server** layer for device status and theft-security integration. The company's current technology page divides the system into three pieces. The GK Controller is installed in the store, checks communication with the GK App, and exchanges signals with the server. The GK App provides device control together with Bluetooth, Wi-Fi, and screen-lock functions. The server side is described as local server and cloud server, although the cloud-server entry is explicitly marked **TBD**. That last qualifier matters. The source documents a server architecture, but it does not establish that every cloud-server function shown on the page is a completed deployed feature. ### The Controller Is the Fixed Side of the Security System Readers unfamiliar with this type of retail security system need one piece of context. Smartphones displayed in a store are mobile objects from the customer's point of view, but the security infrastructure itself needs a fixed point from which the store can coordinate devices and exchange information with a management system. Galaxy Keeper assigns that fixed role to the **GK Controller**. The FCC-certified controller has model number **GK-WL3B001**. BIZBUDDY's FCC filing describes it as a **Galaxy Keeper Controller** and a Digital Transmission System. Its user manual is titled **“Galaxy keeper2.0 installation manual — wireless security solution.”** The installation procedure tells installers to check the number of controllers assigned to the store and install each controller by connecting it to power inside a table close to the displayed product. The application is then installed on the smartphone, after which store, device, security-mode, operating-time, alarm, and wireless settings are configured. The manual specifically notes that parts of the application setup require a **Wi-Fi/LTE/5G network connection**. ### Bluetooth Handles Proximity; Wi-Fi Adds the Network Side The available sources show that Galaxy Keeper uses both Bluetooth and Wi-Fi, although they do not publish enough internal software detail to assign every application message to one radio. BIZBUDDY's current product page says the GK App supports Bluetooth and Wi-Fi, while the Controller checks GK App communication status and exchanges signals with a server. The FCC filing independently shows that the physical controller contains both a Bluetooth module and the WIZFI360PA Wi-Fi module. This makes the broad architecture clear without requiring speculation: **display smartphone / GK App ↔ wireless security environment ↔ GK Controller ↔ server** What cannot be established from the published sources is whether specific security events use Bluetooth first and Wi-Fi second, whether the WIZFI360PA maintains a persistent server socket, or which application-layer protocol is used between the controller and server. Those implementation details are not public in the cited sources and should not be inferred. ### The FCC Filing Shows Exactly Where WIZnet Enters the Design The most interesting part of this project is the certification sequence. WIZnet H.K. LTD. originally held FCC ID **2ATUB-WIZFI360PA**. In June 2022, WIZnet issued an authorization allowing BIZBUDDY to apply for a change in identification. The authorization maps: **Original FCC ID: 2ATUB-WIZFI360PA** to **New FCC ID: 2A7KG-WIZFI360PA**. The document then says the equipment remains electrically identical and that the only change is the device label. BIZBUDDY's own Change of ID request repeats the point even more specifically: there was **no change in design, circuitry, or construction**, and the original test results remained applicable. That new BIZBUDDY module authorization was granted on **July 7, 2022** for 2412–2462 MHz operation, with the filing identifying it as a single modular Wi-Fi approval. Twelve days later, the Galaxy Keeper Controller application reached its final FCC action date of **July 19, 2022**. Its certification cover letter explicitly states that GK-WL3B001 was equipped with **2A7KGFSC-BT630 and 2A7KG-WIZFI360PA**. That provides a particularly clean component-adoption trail: **WIZnet 2ATUB-WIZFI360PA→ BIZBUDDY change-of-ID 2A7KG-WIZFI360PA→ Galaxy Keeper Controller GK-WL3B001** ### A Worked Example from the FCC Test Data The Galaxy Keeper Controller test report gives concrete numbers for the certified configuration. The tested unit was a **pre-production GK-WL3B001**, powered at **DC 12 V** and running firmware **V1.0.0**. The Wi-Fi side used a pattern antenna with a stated maximum gain of **2.0 dBi**, while the Bluetooth side used a dipole antenna with a maximum gain of **2.37 dBi**. For Wi-Fi, the report lists: **2412–2462 MHz** for 802.11 b/g/n20 and **2422–2452 MHz** for 802.11 n40. Conducted maximum output power was reported as **14.64 dBm for 802.11b, 19.49 dBm for 802.11g, 18.87 dBm for 802.11n20, and 17.86 dBm for 802.11n40**. Bluetooth was separately tested over **2402–2480 MHz**, with a maximum conducted output power of **-0.24 dBm** in this report. These values are **FCC laboratory RF measurements**, not measurements of Galaxy Keeper's security range, server latency, Wi-Fi throughput, or reliability inside a retail store. That distinction is important because none of those end-to-end system performance figures is published in the supplied sources. ### Existing Module Certification Reduced, but Did Not Remove, Host Testing Another useful engineering detail appears in the test summary. Several conducted tests such as transmitter output power, bandwidth, power spectral density, and band edge are marked N/A in the Galaxy Keeper report. The test laboratory explains why: > “The product replaces this test with a certificate using an authenticated module.” The finished controller was still evaluated for relevant host-level requirements, including radiated harmonics and antenna compliance. BIZBUDDY's cover letter similarly says the installed wireless modules were electrically and mechanically identical to their certified versions and that only radiation tests were conducted for the host application. This is a useful real-world example of what modular certification means in practice. The WIZnet Wi-Fi module brought an existing certification baseline into the design, but the **finished Galaxy Keeper Controller still has its own FCC ID, 2A7KGGK-WL3B001**, and its own host-level test documentation. ### Security Settings Are Visible, but the Detection Algorithm Is Not The Galaxy Keeper 2.0 manual provides some unusually concrete application behavior. The installer configures store information, selects wired or wireless security operation, sets operating times and weekdays, and configures alarm settings. The manual also displays two alarm-level values — **75 and 80** — in an RSSI information screen and recommends entering settings in increments of five. Once Galaxy Keeper 2.0 security is enabled, the manual says the initial password `2580` can no longer be used and a new password is received whenever the app is entered. The sources do **not**, however, define the complete algorithm that translates RSSI or other wireless information into a theft event. They also do not establish which of the Bluetooth or Wi-Fi radios supplies the values visible in that particular application screen. Those limits should remain explicit in any technical article. ### Where the WIZFI360PA Fits The public evidence supports a clear but appropriately narrow conclusion: **WIZnet's WIZFI360PA design supplies the Galaxy Keeper Controller's 2.4 GHz Wi-Fi radio.** BIZBUDDY's FCC paperwork directly identifies **2A7KG-WIZFI360PA** as one of the modules installed in GK-WL3B001. WIZnet's own authorization proves that this BIZBUDDY FCC ID corresponds to an electrically identical version of WIZnet's original **2ATUB-WIZFI360PA** module. The finished product documentation shows why network connectivity matters: the GK Controller communicates with the GK App and exchanges signals with the server, while the wider system provides device-status and theft-security functions. What the sources do **not** show is the host processor used by GK-WL3B001, the electrical interface to WIZFI360PA, UART or SPI configuration, AT commands, socket configuration, TCP/UDP choice, TLS implementation, server protocol, firmware source, or packet format. The FCC listing explicitly shows the detailed block diagram, schematics, operational descriptions, and parts list as metadata-only exhibits rather than publicly available documents. ### What Is Published and What Is Not BIZBUDDY publicly describes the overall Galaxy Keeper architecture: Controller, App and Server. The product page identifies Bluetooth, Wi-Fi, screen locking, device control, server communication and theft-security integration as parts of the system, while cloud-server support on the page remains marked TBD. The FCC record goes much deeper on the radio side. It publishes the controller's model number, certification dates, user manual, external/internal photographs, host test report, module-certification letter, RF exposure information and module identities. Most importantly for WIZnet readers, the FCC trail establishes not just that a WIZnet part appears in the product, but that **BIZBUDDY formally re-identified WIZnet's already-certified Wi-Fi module and then used that module certification when authorizing the Galaxy Keeper Controller**. For a WIZnet reader, the useful thread is therefore the path from **certified Wi-Fi module to a finished commercial security system**. Galaxy Keeper shows WizFi360 being used not on a development board, but as the network radio inside an in-store controller coordinating a smartphone-oriented wireless security application. ### FAQ #### Is a WIZnet Wi-Fi module really inside Galaxy Keeper? Yes. The Galaxy Keeper Controller FCC cover letter explicitly says GK-WL3B001 was equipped with **2A7KG-WIZFI360PA**, together with a separate Bluetooth module. #### Is 2A7KG-WIZFI360PA actually a WIZnet design? Yes. WIZnet H.K. LTD. authorized BIZBUDDY to change the identification from WIZnet's original **2ATUB-WIZFI360PA** to **2A7KG-WIZFI360PA**. The authorization says the equipment is electrically identical and only the label changed. #### Why did BIZBUDDY have its own FCC ID for the WIZnet module? The documents describe it as a formal **change in identification** under which BIZBUDDY became the grantee of 2A7KG-WIZFI360PA while the hardware remained electrically identical to the WIZnet-certified device. #### Does WizFi360 perform the theft-detection algorithm? The sources do not establish that. They document WIZFI360PA as the Wi-Fi radio and separately describe the Galaxy Keeper application's security functions. The internal division of application processing is not publicly documented. #### Does Galaxy Keeper also use Bluetooth? Yes. Its FCC cover letter identifies **FSC-BT630** along with WIZFI360PA, and the BIZBUDDY product page also describes Bluetooth as part of the Galaxy Keeper system. #### What Wi-Fi modes were certified in the controller? The FCC host report lists 802.11b/g/n20 operation from **2412–2462 MHz** and 802.11n40 from **2422–2452 MHz**. ### Documents The **BIZBUDDY Galaxy Keeper product page** describes the Controller/App/Server architecture, wireless locking concept, Wi-Fi/Bluetooth functions, device control, and server-side security role. [BIZBUDDY Galaxy Keeper](https://www.bizbuddy.co.kr/%EA%B0%A4%EB%9F%AD%EC%8B%9C%ED%82%A4%ED%8D%BC?utm_source=chatgpt.com) The **Galaxy Keeper Controller FCC record, 2A7KGGK-WL3B001**, contains the finished-product authorization, test documents, user manual and module-integration records. [FCC ID 2A7KGGK-WL3B001](https://fccid.io/2A7KGGK-WL3B001?utm_source=chatgpt.com) The **Original Test Reports Cover Letter** is the key adoption document: it explicitly states that GK-WL3B001 contains **2A7KGFSC-BT630 and 2A7KG-WIZFI360PA**. The **WIZnet Authorization Letter** establishes that BIZBUDDY's 2A7KG-WIZFI360PA was created from WIZnet's **2ATUB-WIZFI360PA**, with the equipment electrically identical and only the label changed. The **FCC DTS Test Report** provides the tested frequencies, antenna gains, RF output values, 12 V supply and V1.0.0 firmware configuration for the pre-production GK-WL3B001 sample. --- Source: https://maker.wiznet.io/bruno/resellers/--gk-galaxy-keeper/