Arad Connectivity MN54LM-20A BLE Module Module-to-Module Full-Axis Test Report (1M & 125K PHY)
Conducted in the open outdoor environment of the Zhuwei seaside, this test aims to thoroughly investigate the actual impact of module miniaturization on effective wireless connection ranges. This evaluation comprehensively assesses the Arad Connectivity MN54LM-20A series BLE modules—featuring built-in CHIP, PCB antennas, and external u.FL antenna versions, excluding the S20A model. Shifting from previous smartphone-to-module setups to a module-to-module bi-directional connection architecture, the testing scope simultaneously incorporates both standard 1M PHY and long-range 125K PHY transmission modes to comprehensively verify the extreme communication performance and multi-axis propagation characteristics in a coastal environment.
Arad Connectivity MN54LM-20A BLE Bluetooth Module Smartphone Connection Full-Axis Test Report (1M PHY)
Compared to the MN54L-15 series modules (9.3x14.5x2.1mm), the MN54LM-20A modules feature a more compact size (7.5x13x2.0mm), with the MN54LM-S20A module being the smallest at (7.5x10.2x2mm). This test aims to explore "what is the impact of size reduction on the effective connection range of the modules?", thoroughly verify the maximum effective communication range of the Arad Connectivity MN54LM-20A series BLE modules when communicating with an iPhone 7 smartphone under 1M PHY, and evaluate the communication performance across all axes for modules equipped with built-in CHIP, PCB antennas, and external u.FL antenna versions.
Nordic’s Lifetime FOTA: A Strategic Gateway to EU CRA Compliance
As the EU Cyber Resilience Act (CRA) moves toward full enforcement by 2027, the ability to provide security updates throughout an IoT product's lifecycle has evolved from a "nice-to-have" feature into a mandatory requirement for market access.
To simplify the compliance journey, Nordic Semiconductor, in collaboration with device management expert Memfault, has launched the nRF Cloud Lifetime Flat-rate FOTA solution. This service transforms complex, expensive cloud updates into a simple, low-burden package for developers.
(LE Coded1M PHY) Arad MN54L/MN52H Bluetooth Module Container Signal Penetration Full Axis Test Report
Following the previous validation of the Bluetooth module's signal penetration and connection capabilities in an extreme Radio Frequency (RF) shielding environment, this test is an expansion aimed at completely verifying the full penetration performance of the Arad MN54L and MN52H series Bluetooth modules.
(LE Coded 1M) Bidding Farewell to the "Metal Shielding Effect": MN54L's Penetration Power Ensures IIoT Device Connection Stability in Containers and Cabinets
By installing the Device Under Test (DUT) inside the furthest end of a large metal shipping container and conducting connection tests within a parallel-container setting, we simulated severe conditions common in Industrial IoT (IIoT) applications where signals must penetrate metal structures, such as equipment cabinets, walls, or buildings.
(LE Coded 125kbps/1M Field Test) Next-Generation Wireless Performance: RF Validation and Deep Analysis of Long-Range Bidirectional Bluetooth Communication on the Arad MN54L Module (Powered by Nordic nRF54L IC)
The design goal for this MN54L test is to directly inherit the high-standard validation methodology established by the MN52H testing. This ensures the data accurately reflects the most robust performance achievable by the MN54L module in complex and demanding applications, such as Bluetooth Mesh, Thread, and Matter. For consistency with previous tests, we utilize the MN52H-U40 as the MASTER/CENTRAL device, communicating bidirectionally with various antenna configurations of the MN54L modules. Testing was conducted in an open environment, specifically a beach location, to minimize interference from geographical obstacles and surrounding radio signals, thereby providing the most accurate and valuable reference data on the module’s ultimate wireless transmission performance.
(LE Coded 250kbps Field Test) Arad MN52H 250K mold Bluetooth Module Bi-directional Communication (MASTER/CENTRAL TO SLAVE/PERIPHERAL) Transmission Range Test
This report presents the latest findings from the Arad Connectivity MN52H BLE (Bluetooth Low Energy) module's transmission range test series. Following the successful verification of the maximum communication distances for the 125K (Long Range) and 1M modes in previous phases, the current testing focuses specifically on validating the bidirectional transmission performance of the 250K PHY mode in an open-field environment.
(LE Coded 125kbps/1M Field Test) MN52H (nRF52840) Bluetooth Module Bi-directional Communication (MASTER/CENTRAL TO SLAVE/PERIPHERAL) Transmission Range Test
This report aims to thoroughly validate the maximum effective bi-directional communication range (MASTER/CENTRAL TO SLAVE/PERIPHERAL) of the Arad Technology MN52H BLE module in an open field environment, and to compare the influence of different antenna types (CHIP, PCB, u.FL) on transmission performance.
Zigbee Communication Protocol: The Lightweight Pioneer of IoT
Zigbee was specifically designed to fill the gap left by Wi-Fi and Bluetooth in large-scale, low-power wireless sensor networks, making it an ideal choice for smart homes, industrial automation, and more.
