Circuit Design, Inc. List of Products and Services

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