Circuit Design, Inc. Official site

LTE-M Compatible Wireless Communication Module for Public Transportation Systems

Visualizing operational status through wide-area communication. LTE-M modules that can leverage existing systems.

In public transportation management, real-time data collection such as vehicle location information, operational status, and anomaly detection is essential. Accurate tracking of vehicles over a wide area and rapid response to emergencies such as delays and accidents are required. LTE-M addresses these challenges by utilizing a cellular network that covers a broad area, enabling stable data transmission with low power consumption. Our LTE-M compatible wireless communication module allows for easy integration into existing systems, contributing to improved operational efficiency and safety. 【Use Cases】 * Vehicle location management for buses, trains, taxis, etc. * Real-time monitoring of operational status * Detection of vehicle malfunctions and anomalies * Information provision to passengers 【Benefits of Implementation】 * Cost reduction through optimization of operations * Rapid response through real-time information sharing * Enhanced safety * Increased customer satisfaction

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basic information

**Features** * Minimum specification with nRF9160 and SIM slot mounted on a single board * Connection to MCU is only 3 lines (UART (TXD/RXD) and CTS, excluding Vcc/GND/Vref) * Interface voltage can be set to match external MPU (Vref terminal) * Supports LTE Cat.M1 (LTE-M), enabling wide-area and highly reliable data transmission * Pin-compatible design with specific low-power wireless module (MLR-429) **Our Strengths** As a pioneer in specific low-power wireless technology, we provide high-quality wireless devices that operate stably over long periods. We prioritize achieving "reliable wireless communication" in our customers' products and have built a track record in fields where long-term stable operation and noise resistance are essential, such as medical, security, and infrastructure monitoring. We apply strict quality control standards from the product planning stage and offer highly durable wireless communication devices that comply with domestic radio wave regulations.

Price range

P2

Delivery Time

P3

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Model number/Brand name

LTM-1 Wireless Module

Applications/Examples of results

【Usage】 Ideal for data collection and remote control in wide-area applications such as environmental monitoring, infrastructure management, and security surveillance. Specifically, it is useful for IoT devices that require low power consumption and wide coverage, including remote measurement of temperature and humidity, smart meter readings, and monitoring of disaster prevention equipment. With a minimum specification that includes a standard SIM slot, it is optimal as a core module for embedding in small devices or upgrading existing wireless systems to LTE-M.

LTE-M Wireless Module LTM-1

PRODUCT

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Distributors

We specialize in the design and manufacture of Specific Low-Power Radio (SLPR) equipment—a solution distinct from general wireless offerings. Our focus is on high-reliability wireless systems for industrial and professional applications that demand advanced stability and dependability, operable without complex licensing procedures. Our mission is to ensure unwavering wireless connectivity for your products. Our versatile radio modules and remote controls are widely adopted in fields where long-term stable operation and noise immunity are essential, including medical devices, security systems, and infrastructure monitoring. We apply strict quality control standards from the initial planning stages, providing highly durable wireless communication devices that comply fully with domestic radio regulations.