Circuit Design, Inc. Product Lineup

The "SLR-429M" is an embedded wireless module designed for ease of use. In addition to the LoRa mode, which enables ultra-long-range communication at low bit rates, it also features a conventional FSK mode. It achieves LPWA via LoRa with a completely proprietary protocol in the 429MHz band, which is designed solely for circuit applications. The 429MHz band has superior diffraction characteristics compared to the 920MHz band, allowing for stable communication in various environments such as indoors, mountainous areas, along rivers, and underground. It connects to external microcontrollers or PCs via a UART interface. This is a specific low-power wireless module that requires no license and incurs no communication fees. 【Features】 ■ Communication distance: over 10km line of sight ■ Communication speed: 245bps ■ Capable of communication with up to 8 contact points ■ Superior diffraction characteristics compared to the 920MHz band *You can purchase directly from the related links. Orders starting from one unit are also welcome!

MLR-429 is a wireless module that focuses on serial communication, pursuing miniaturization and ease of integration. In addition to conventional FSK mode communication, it features a LoRa mode that enables ultra-long-range communication at low bit rates. In LoRa mode, it achieves communication distances of over 10 km in line of sight, despite having a low transmission power due to excellent reception sensitivity. It connects to external microcontrollers or PCs via a UART interface, allowing for the transmission and reception of customer data and device control using our unique command system developed in the industrial sector. It can be used for data transmission and telemetry applications. 【Features】 ■ Equipped with Technical Compliance Mark ■ Ultra-long-range data communication in the 429 MHz band using LoRa mode ■ Compact size ■ Compatible with LTM-1

The SLR-429M-RS2 is an RS232C interface board equipped with the SLR-429M. Since it is equipped with the SLR-429M, which has obtained the Technical Regulation Conformity Mark (Type Approval), a license for the radio station is not required. It can be connected to the D-Sub-9 pin COM port of a computer or PLC. Additionally, it features transmit and receive LEDs, a power terminal, and a power switch. You can easily check the communication performance of the SLR-429M in combination with the evaluation program. 【Features】 ■ Equipped with SLR-429M ■ Connects to the COM port of a computer ■ Simple communication distance tests can be conducted with an optional SW/LED board

In the FA industry, stable data communication is essential for remote monitoring and control of equipment. Particularly in cases of layout changes within factories or wireless conversion of existing equipment, there is a need to eliminate wiring hassles and build flexible systems. The SLR-429M RS-232C interface board directly connects to PLCs and PCs, enabling long-distance LoRa communication via RS232C, thus addressing these challenges. 【Use Cases】 - Remote centralized management of equipment through wireless conversion of existing PLC systems - Long-distance monitoring in structural monitoring of tunnels, bridges, etc. - Collection of various sensor data within factories 【Benefits of Implementation】 - Reduction of wiring costs - Flexible system construction - Remote monitoring and control of equipment - Stable communication in environments with many obstacles

In research fields, long-distance and stable data transmission is required for the collection of experimental and observational data. Particularly in measurements conducted outdoors or in remote locations, the need for wireless communication increases due to wiring constraints. The SLR-429M RS-232C interface board connects to PLCs or PCs with an RS232C interface, enabling long-distance data transmission via LoRa communication. This allows researchers to efficiently collect data without being restricted by location. 【Usage Scenarios】 - Data collection from sensors in remote locations - Data communication between devices within research facilities - Data logging in outdoor experiments 【Benefits of Implementation】 - Expansion of data collection range through long-distance communication - Integration with existing equipment via RS232C connection - Stable data transmission using LoRa

In the entertainment industry, precise control of equipment such as lighting and sound is required to enhance the immersive experience of events and shows. Particularly in large venues or outdoor events, challenges may arise in controlling equipment due to wiring constraints. The SLR-429M RS-232C interface board connects to PLCs and PCs via RS232C and utilizes LoRa communication to address these challenges. 【Usage Scenarios】 * Lighting control at concert venues * Attraction control at theme parks * Sound system control at event venues 【Benefits of Implementation】 * Flexible system construction through long-distance communication * Reduction in wiring costs * Increased freedom in event production

In the agricultural sector, water management, temperature control, and remote monitoring of equipment are required for vast farmland. Especially in situations where there is a shortage of labor, it is important to grasp this information in real-time and conduct efficient management. The SLR-429M RS-232C interface board connects to PLCs or PCs and solves these challenges by enabling long-distance LoRa communication via RS232C. 【Use Cases】 * Water level monitoring of farmland * Temperature and humidity management * Remote monitoring of equipment * Remote management through wireless PLC systems 【Benefits of Implementation】 * Extensive data collection and centralized management * Cost reduction through labor saving * Early detection of anomalies and rapid response * Accurate management based on data

In experiments conducted in educational institutions, there may be a need for data collection and control from remote locations. In particular, transmitting data wirelessly from sensors and measuring instruments and analyzing it in real-time can lead to increased efficiency in experiments and the creation of new learning opportunities. However, wired connections pose challenges such as the hassle of wiring and limitations on mobility. The SLR-429M RS-232C interface board addresses these issues and expands the possibilities of experiments. 【Usage Scenarios】 - Data collection from sensors located remotely - Wireless control of experimental devices - Data sharing between laboratories 【Benefits of Implementation】 - Increased freedom in experiments - Improved efficiency in data collection - Enhanced research outcomes

In the agricultural sector, accurately grasping environmental data such as temperature, humidity, and soil moisture is crucial for implementing appropriate watering and fertilizer management, which in turn enhances yield and quality. This is especially important in vast farmlands and mountainous areas where wired data collection is challenging, necessitating stable wireless communication. This product achieves long-distance communication with high stability, enabling data collection from remote locations. 【Usage Scenarios】 - Environmental monitoring of fields (temperature, humidity, soil moisture, etc.) - Environmental control within greenhouses - Watering management from remote locations 【Benefits of Implementation】 - Real-time understanding of crop growth conditions - Cost reduction through optimized watering - Minimization of damage through early detection of anomalies

In smart city streetlight control, remote monitoring and control of a large number of streetlights over a wide area is required. Particularly for streetlights located in areas far from urban centers or in places where radio waves are difficult to reach, stable wireless communication is essential. Conventional wireless systems may face challenges such as limitations in communication distance and signal obstruction due to obstacles. Our 429MHz ultra-long-range LoRa wireless module addresses these issues through long-distance communication and high diffraction capability, enabling efficient streetlight control in smart cities. 【Use Cases】 - Streetlight control in urban areas - Streetlight control in parks and squares - Streetlight control on suburban roads and facilities 【Benefits of Implementation】 - Extensive area coverage through long-distance communication - Stable communication in environments with many obstacles - Reduced operational costs due to low power consumption

In the field of water quality monitoring, it is important to remotely collect water level and water quality data from rivers and lakes and to detect anomalies early. In particular, data collection at widely distributed monitoring points or in hard-to-access locations poses challenges regarding communication stability. Our 429MHz ultra-long-range LoRa wireless module achieves long-distance communication over 10 km with excellent diffraction and ultra-high sensitivity reception, enabling stable data transmission even in difficult environments such as underground or mountainous areas. This contributes to improving the reliability of water quality monitoring systems. 【Use Cases】 * Monitoring water levels in rivers and lakes * Data collection from water quality sensors * Detection of water quality anomalies from remote locations 【Benefits of Implementation】 * Ensuring a wide monitoring area through long-distance communication * Stable data transmission in underground and mountainous areas * Realization of battery-powered systems with low power consumption

In mining, ensuring the safety of workers underground and improving the efficiency of operations such as excavation and transportation are crucial. The underground environment makes it difficult for radio waves to reach, leading to challenges such as delays in information transmission during accidents and decreased productivity due to delays in remote operations. The 429MHz ultra-long-range LoRa wireless module enables communication even in environments where radio waves are hard to reach, such as underground mines, thanks to LoRa's excellent diffraction characteristics. This facilitates real-time information sharing and efficient operations through remote control, contributing to the safety and efficiency of mining operations. 【Use Cases】 - Safety management of workers underground (location information, vital data, etc.) - Remote monitoring and control of underground equipment - Rapid information transmission in emergencies 【Benefits of Implementation】 - Reduced risks associated with communication interruptions underground - Increased productivity through improved work efficiency - Achieving safe mining operations

In the energy industry, the spread of smart meters is advancing, and remote monitoring of electricity usage is being demanded. Particularly in areas such as underground or mountainous regions where radio waves are difficult to reach, the stability of communication is crucial for data collection. If communication is interrupted, it becomes challenging to accurately grasp electricity usage, potentially hindering efficient energy management. Our 429MHz ultra-long-range LoRa wireless module addresses these challenges through long-distance communication and high diffraction capability. 【Use Cases】 * Data collection from smart meters * Monitoring electricity usage in underground and mountainous areas * Data transmission in locations where communication infrastructure is not established 【Benefits of Implementation】 * Accurate grasp of electricity usage through stable data collection * Efficient energy management through remote monitoring * Reduction of communication costs

In manufacturing equipment monitoring, it is important to grasp the operational status of a wide range of equipment in real-time and to detect anomalies early. In particular, data collection from sensors installed in various locations within the factory and the control of equipment located remotely are essential for improving production efficiency and ensuring safety. However, traditional wireless communication has faced challenges such as signal obstruction due to buildings and obstacles, instability in long-distance communication, and difficulties in securing power sources at installation sites. Our 429MHz ultra-long-range LoRa wireless module addresses these challenges and enables stable equipment monitoring. 【Use Cases】 * Collection of various sensor data within the factory * Monitoring the operational status of remotely located equipment * Anomaly detection and remote control of production lines * Data collection from equipment installed outdoors 【Benefits of Implementation】 * Early detection of equipment anomalies, reducing downtime * Reduction of travel costs to the site through data collection from remote locations * Battery-operated operation made possible by energy-efficient design * Stable communication achieved through LoRa's long-distance transmission and high diffraction capability

In forest management, extensive data collection and remote equipment control are required. Particularly in mountainous areas and within forests, radio signals are often weak, making it challenging to ensure stable communication. Rapid information transmission is essential for monitoring water levels and early detection of landslides. Our 429MHz ultra-long-range LoRa wireless module enables long-distance communication over 10 km in line-of-sight conditions and stable communication in difficult environments such as underground or mountainous areas, facilitating information collection and remote control in forest management. 【Use Cases】 * Water level monitoring within forests * Early detection of landslides * Remote control of forestry machinery * Collection of various sensor data 【Benefits of Implementation】 * Increased efficiency in data collection across extensive forests * Improved work efficiency through remote equipment control * Early detection and response to disaster risks * Establishment of battery-powered systems with low power consumption

In the field of disaster prevention and mitigation, rapid and accurate information transmission is essential. Especially during disasters such as earthquakes and heavy rains, there is a possibility that communication infrastructure may be disrupted, making it crucial to secure means of information collection and transmission in areas where radio waves are difficult to reach, such as underground or mountainous regions. The 429MHz ultra-long-range LoRa wireless module enables stable communication even in such situations, allowing for the transmission of life-saving information such as understanding disaster conditions and evacuation instructions. 【Usage Scenarios】 * Monitoring river water levels * Monitoring landslide hazard areas * Information transmission for evacuation centers * Remote monitoring of infrastructure facilities 【Benefits of Implementation】 * Capability for extensive information collection * Information transmission independent of communication infrastructure * Accurate response through rapid situation assessment * Contribution to saving lives

In the parking industry, there is a demand for improved convenience for users and increased operational efficiency. Particularly in urban areas and parking lots within commercial facilities, it is important to accurately grasp and display the availability of spaces in real-time. In traditional wired systems or underground parking lots where radio waves have difficulty reaching, understanding the availability of spaces has been challenging. Our 429MHz ultra-long-range LoRa wireless module enables stable communication even in underground or multi-story parking lots due to its long-distance communication and high diffraction capability, allowing for accurate monitoring of availability. 【Use Cases】 * Parking space availability display system * Data collection for entry and exit management systems * Sensor data transmission in multi-story parking lots 【Benefits of Implementation】 * Increased customer satisfaction through real-time availability displays * Improved efficiency in parking lot operations * Cost reduction through reduced wiring

In the agricultural sector, it is essential to accurately grasp environmental data such as temperature, humidity, and soil moisture levels to optimize crop growth conditions. Particularly in vast farmlands and greenhouses, wired data collection can be challenging, making the stability of wireless communication crucial. This product utilizes LoRa modulation and the characteristics of the 429MHz band to achieve long-distance and stable data transmission. 【Application Scenarios】 - Environmental monitoring within greenhouses - Collection of weather observation data across extensive farmlands - Integration with various sensors in smart agriculture 【Benefits of Implementation】 - Improved work efficiency through remote data collection - Maximization of harvest yields through visualization of environmental data - Risk reduction through early detection of anomalies

In the optimization of waste collection in smart cities, the optimization of collection routes and real-time monitoring of collection status are required. In particular, accurately detecting full trash bins and tracking the location of collection vehicles is essential for cost reduction and improving resident services. However, in urban areas, there are often signal obstructions, making data collection from underground or secluded locations a challenge. Our 429MHz band LoRa small wireless module achieves long-distance communication and low power consumption, addressing these issues. 【Use Cases】 - Detection of full trash bins - Tracking of collection vehicle locations - Optimization of waste collection routes 【Benefits of Implementation】 - Reduction in collection costs - Improvement in collection efficiency - Enhancement of resident services

In the logistics industry, it is essential to accurately grasp the location information of packages during transportation and to conduct efficient management. Particularly in extensive warehouses, distribution centers, and outdoor transportation, the ease of radio wave reception is crucial. Conventional wireless systems often face challenges in communication within buildings or over long distances, leading to difficulties in obtaining location information. Our 429MHz band narrowband LoRa small wireless module enables long-distance communication and addresses the challenges of location tracking in logistics. 【Usage Scenarios】 * Package tracking within warehouses * Location information management for delivery trucks * Container tracking outdoors * Forklift position management in internal logistics 【Benefits of Implementation】 * Prevention of package loss * Optimization of delivery routes * Increased efficiency in inventory management * Accurate information provision to customers

In manufacturing equipment monitoring, it is important to grasp the operational status of equipment in real-time and detect anomalies early. Particularly in large factories or equipment spanning multiple buildings, laying wired LAN can be difficult, and the stability of wireless communication can be a challenge. This product leverages LoRa modulation and the characteristics of the 429MHz band to achieve long-distance and stable data transmission, thereby solving these issues. 【Usage Scenarios】 * Data collection from various sensors within the factory * Monitoring the operational status of production equipment * Monitoring equipment located in remote areas 【Benefits of Implementation】 * Early detection of equipment anomalies, reducing downtime * Improved production efficiency * Cost reduction through reduced wiring

In the healthcare field, real-time monitoring of patients' vital data is crucial. Especially in home healthcare and telemedicine, it is essential to collect accurate information while reducing the burden on patients. Wireless communication technology is indispensable to meet these needs. Our 429MHz band narrowband LoRa small wireless module supports long-distance communication and low power consumption, strongly facilitating data collection in the healthcare sector. 【Use Cases】 - Remote monitoring of patients' vital data (heart rate, body temperature, etc.) - Data collection from wearable devices - Data communication between medical devices within hospitals 【Benefits of Implementation】 - Enables continuous monitoring without restricting patients' range of activities - Reduces the burden on healthcare professionals and allows for quicker responses - Extends battery life due to low power consumption design

In the energy industry, it is essential to collect accurate usage data from smart meters to enable efficient power supply and demand forecasting. Particularly, data collection from smart meters installed in areas away from urban centers or in locations where radio waves are difficult to reach requires stable communication. Our 429MHz band narrowband LoRa small wireless module achieves long-distance communication and low power consumption, streamlining data collection from smart meters. 【Use Cases】 - Installation of smart meters in areas where communication infrastructure is not developed, such as mountainous regions or remote islands - Data collection in places where radio waves are easily obstructed, such as within buildings or underground facilities - Remote monitoring of widely distributed smart meters 【Benefits of Implementation】 - Data collection over a wide area through long-distance communication of over 10 km - Extended battery life due to low power consumption - Easy integration into existing systems via UART interface

In the environmental monitoring industry, there is a demand for the accurate collection of water quality data from rivers and lakes. Particularly in remote or hard-to-access locations, real-time data acquisition for water quality measurement is crucial. Our 429MHz band LoRa small wireless module enables long-distance communication and low power consumption, allowing for data collection from water quality measurement sensors even in areas where traditional wireless communication has difficulty reaching. 【Use Cases】 * Water quality monitoring of rivers, lakes, and dams * Water quality measurement in remote locations * Data collection from underground facilities 【Benefits of Implementation】 * Extensive data collection through long-distance communication of over 10km * Battery operation due to low power consumption * Rapid situation assessment through real-time data acquisition

In the field of disaster prevention, rapid and reliable evacuation guidance is required. Especially during a disaster, communication infrastructure may be disrupted, and there may be areas where conventional wireless communication does not reach. In response to this challenge, our 429MHz band narrowband LoRa small wireless module achieves long-distance communication and miniaturization, supporting the establishment of evacuation guidance systems. 【Usage Scenarios】 * Information transmission to evacuation sites * Confirmation of safety in disaster-stricken areas * Display of evacuation routes 【Effects of Implementation】 * Enables information transmission over a wide area * Achieves rapid evacuation guidance * Contributes to saving lives

In the parking industry, there is a demand for improved convenience for users and increased operational efficiency. In particular, accurately understanding available spaces is crucial for enhancing customer satisfaction and reducing unnecessary time and effort. Traditional wireless systems have faced issues with signal reach and power consumption, but our 429MHz narrowband LoRa small wireless module addresses these challenges. 【Usage Scenarios】 - Real-time monitoring of vacant parking spaces by installing the module in each parking space within the lot - Centralized management of extensive availability by operators managing multiple parking lots - Use in locations where signal reception is difficult, such as outdoor and underground parking lots 【Benefits of Implementation】 - Facilitates smooth parking for users, enhancing customer satisfaction - Increases efficiency in parking lot operations and improves turnover rates - Reduces battery replacement frequency and operational costs through energy-efficient design

In the retail industry, accurate inventory management is crucial for preventing lost opportunities and enhancing customer satisfaction. Particularly in large stores or warehouses, or in stores that span multiple floors, real-time inventory tracking poses a challenge. Traditional wireless systems often struggle with areas where signals are weak or where obstacles disrupt communication. Our 429MHz band narrowband LoRa small wireless module enables stable data transmission throughout the store due to its long-range communication and high penetration capabilities. This improves the accuracy of inventory management and contributes to operational efficiency. 【Use Cases】 - Inventory management within warehouses - Product location management within stores - Data collection from the backroom 【Benefits of Implementation】 - Reduction of lost opportunities through inventory visibility - Increased efficiency in stocktaking tasks - Improvement in customer satisfaction

In the management of public transportation operations, it is important to grasp vehicle location information and operational status in real-time to ensure safe and efficient operations. Particularly in areas such as urban and mountainous regions where radio waves are difficult to reach, data collection poses a challenge. This product utilizes LoRa modulation technology and the characteristics of the 429MHz band to achieve long-distance communication. This enables the collection of vehicle location information and operational data over a wide area, contributing to the efficiency of operational management. 【Use Cases】 * Monitoring the operational status of buses and trains * Tracking vehicle location information * Remote monitoring of station and onboard facilities 【Benefits of Implementation】 * Efficient operational management through visualization of operational status * Rapid response through real-time information collection * Reduction of communication costs

In the security industry, rapid information transmission and the construction of flexible systems that can be installed in various locations are essential. In particular, intrusion detection in places where securing power is difficult or where wiring work is challenging requires the use of wireless technology. However, traditional wireless systems have faced issues such as poor signal reach and high power consumption. Our 429MHz narrowband LoRa small wireless module achieves both long-distance communication and low power consumption, addressing these challenges. 【Usage Scenarios】 - Remote monitoring of warehouses, parking lots, and material storage areas - Intrusion detection systems for buildings, factories, and stores - Sensor networks for outdoor installations 【Benefits of Implementation】 - No wiring required, increasing flexibility in installation locations - Low power consumption enables long-term operation powered by batteries - Long-distance communication covers a wide area - Easy integration with existing security systems