Circuit Design, Inc. Company Overview

Our company will begin selling the multi-band LoRa small wireless module "MLR-400," which supports a total of 82 channels in the 426/429/449/469 MHz bands, starting October 1, 2026. This product strongly supports the construction of IoT infrastructure in harsh environments, such as monitoring the condition of factory equipment where many radio waves intersect, as well as monitoring water levels in underground areas, manholes, and rivers, by achieving long-distance communication while avoiding radio wave interference. We have developed a "multi-band compatible module" that allows for the selection of the optimal frequency band based on the radio wave conditions at the installation site, leveraging the wireless technology we have cultivated over many years. Our goal is to support stable operation of disaster prevention and social infrastructure, where communication interruptions are not permitted, and to address social issues that protect the safety and security of local communities. 2. Three features of the product "MLR-400": - "Multi-band design" that allows channel selection according to surrounding radio wave conditions - "LoRa ultra-long-distance communication" that is strong against obstacles and can reach from underground or distant locations - "LTE-M module compatibility" that reduces the hassle of design changes and enables smooth implementation

The product catalog has been updated. The latest version is from October 2025.

We have started selling the 'KSR426W-A' as the successor to the waterproof remote control receiver KST426W's KSR426W and KSR426. The 'KSR426W-A' is a waterproof output unit equipped with four control outputs and four selectable output modes depending on the application. It supports the highly requested DC 24V, which is new for the successor to the KSR426W. Compared to the conventional receiver, the power supply voltage now accommodates DC 7-24V, and the antenna connector has been changed to the more common SMA-J. The 426MHz band waterproof remote control series for light industries has been enhanced for robustness and waterproofing, ensuring reliable long-distance communication through our developed wireless technology, making it safe for use in harsh outdoor environments. It can be utilized as a highly reliable telecommunication system for various industrial applications such as civil engineering, construction, vehicles, welfare, and agriculture. For details such as the selling price, please refer to the product page for KSR426W-A. *Please note that KSR426W and KSR426 have different antenna connector shapes, so the cables and antennas that can be used will differ. When ordering, please be sure to refer to the combination examples and make your purchase accordingly.