HUAWEI ME909u-521 LTE LGA Module

 

Application Guide

Thermal Protection Application Scenarios

9 Thermal Protection Application Scenarios

9.1 Pre-configuration

Command

Description

 

 

AT^CURC=2,0x8000000000,0x8000000000

Enable the thermal protection

 

unsolicited indication when the

 

module is working or in sleep

 

mode.

 

 

OK

 

 

 

^THERM: 1

When the temperature is higher

 

than the temperature protection

 

threshold, the module enables

 

thermal protection: The module

 

turns off its RF and reports to the

 

host.

^THERM: 0

When the temperature is lower than

 

the temperature protection

 

hysteresis threshold, the module

 

disables thermal protection: turns

 

on its RF and reports to the host.

 

 

9.1.1 Troubleshooting

None

9.2Thermal Protection Process

When the module's temperature is lower than 99°C, the module works normally.

When the module's temperature is higher than 99°C, the module enables thermal protection: turns off its RF transmission and presents the ^THERM: 1 indication. When the module's temperature is lower than 85°C, the module

Issue 01 (2013-07-05)

Huawei Proprietary and Confidential

62

Copyright © Huawei Technologies Co., Ltd.

 

 

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Huawei ME909u-521 manual Thermal Protection Application Scenarios, Pre-configuration, Thermal Protection Process

ME909u-521 specifications

The Huawei ME909u-521 is a cutting-edge module designed to meet the increasing demand for mobile broadband connectivity in various industrial and commercial applications. This compact and robust device is primarily used for M2M (Machine-to-Machine) communication and IoT (Internet of Things) solutions. It supports a wide range of features and technologies that make it a versatile choice for businesses looking to enhance their operational efficiency through cellular connectivity.

One of the key features of the ME909u-521 is its support for multiple frequency bands. It is compatible with 4G LTE networks, ensuring high-speed data transmission and reduced latency. This capability allows for seamless communication in various environments, making it an ideal solution for applications such as smart cities, telematics, transportation, and remote monitoring.

In addition to LTE capabilities, the ME909u-521 also supports 3G and 2G networks, providing fallback options in areas where 4G coverage may be limited. This multi-network support guarantees reliable connectivity, which is crucial for mission-critical applications. The module is designed to maintain stable connections even in challenging conditions, such as in-motion environments or areas with fluctuating signal strengths.

The Huawei ME909u-521 features a compact form factor, making it easy to integrate into a wide range of devices and applications. Its small size reduces the overall footprint, which is particularly advantageous for space-constrained installations. Furthermore, the device is equipped with advanced power management features that help optimize energy consumption, extending the lifespan of connected devices.

For enhanced security, the ME909u-521 integrates robust encryption protocols to protect data transmission over mobile networks. Security is a top priority for M2M and IoT applications, and this module ensures secure communication by adhering to global standards and best practices.

Another notable characteristic is its extensive support for various interfaces, including UART and USB, facilitating seamless integration with different hardware systems. This flexibility allows developers to quickly implement and scale their solutions based on specific project requirements.

Overall, the Huawei ME909u-521 is a powerful connectivity module that combines high-speed communication, versatility, and reliability. With its state-of-the-art technologies, it is well-suited for a wide array of applications, making it a valuable asset for businesses looking to advance their digital transformation initiatives. Whether utilized in smart grids, remote monitoring, or intelligent transportation systems, the ME909u-521 stands out as a leading solution in the M2M and IoT landscape.