Circuit Design, Inc. List of Products and Services

The KST426W and KSR426(W) are products born from customer requests. Our customers often use them for industrial applications, so we have enhanced their waterproofing and robustness to be suitable for industrial use, and we have ensured a button size and communication reliability that supports a Hamming distance of 6. A buzzer sounds according to the button pressed. The control units are compatible with 9V and 12V systems. The communication range is 300 to 400 meters in line of sight. Since it has obtained the technical conformity mark, it can be used without any licensing procedures. The term "light industry" is named to indicate that it does not reach the level of telecommunication devices used in heavy machinery, but is designed to be used in somewhat harsh environments as a product for general industrial applications. It is aimed at civil engineering, construction, vehicles, welfare, agriculture, and more. It is intended for applications where multiple remote controls switch ON/OFF, such as switching displays (controlling multiple control units with one remote control). Wireless remote controls: KST426W-2 (2 buttons), KST426W-3 (3 buttons), KST426W-4 (4 buttons) Control units (receivers): KSR426W (waterproof), KSR426 (non-waterproof)

The WT/WR series is a specific low-power radio equipment that complies with ARIB STD-T67. It has a technical compliance mark, allowing it to be used without a radio station license. The communication range is approximately 200 to 300 meters in line of sight. You can choose between a 1-button or 2-button remote control. The WR-01 receiver is a 2-contact control receiver equipped with a power MOSFET that can directly drive relays. To ensure outdoor use, the main unit is IPX5 rated, and the connector complies with JIS D0203 S2. It features four selectable output modes depending on the application, compatible with 9V and 12V systems. It is suitable for applications where multiple remote controls are used to switch ON/OFF (controlling multiple devices with one remote control), such as switching displays. It can also be used in combination with radio module types (CDT-TX-02M, CDT-RX-03M). Wireless remote controls: WT-01 (1-button), WT-02 (2-button) Receiver: WR-01 (2 contacts) Wireless modules: CDT-TX-02M (transmitter with 6 contact inputs), CDT-RX-03M (receiver with 6 contact outputs)

The RT/RR series is a specific low-power radio device operating in the 315MHz band that complies with ARIB STD-T93 and has obtained the technical conformity mark. It offers longer communication distances and more stable communication compared to weak radio remote control devices. Additionally, it does not have the directionality of infrared remote controls, allowing you to use it without worrying about the orientation or location of the transmitter. You can choose between two types of remote controls: 3-button and 4-button. There is also a wireless module type available (RTM-1B, RRM-1A). When a button is pressed, it performs a one-shot transmission, making it suitable for applications such as switching lights or displays ON/OFF. Wireless remote controls: RT-3B (3-button), RT-4B (4-button) Control unit (receiver): RR-1A Wireless module type: RTM-1B (transmitter), RRM-1A (receiver)

The "KST426W-2" is a two-contact waterproof remote control that does not require a radio station license with a technical compliance mark. Designed for "light industrial" applications, it enables easy wireless communication even in harsh environments such as civil engineering, construction, vehicles, welfare, and agriculture. To ensure safe use in tough conditions like outdoor work, its robustness and waterproofing have been enhanced, allowing for reliable long-distance communication developed through our wireless technology. It can be utilized as a highly reliable telecommunication system for various industrial applications including civil engineering, construction, vehicles, and agriculture. 【Features】 ■ ARIB STD-T67 construction design certification obtained ■ Communication distance is approximately 300 to 400 meters in line of sight ■ Can transmit approximately 50,000 times using two AA batteries ■ Achieves a Hamming distance of 6 to ensure safety *For more details, please refer to the related links or feel free to contact us.

The "KST426W-4" is a waterproof remote control with four contacts that has obtained the technical compliance mark and does not require a radio station license. Designed for "light industry" applications, it can easily be wireless in harsh usage environments such as civil engineering, construction, vehicles, welfare, and agriculture. To ensure safe use in harsh environments like outdoor work, its robustness and waterproofing have been enhanced, enabling reliable long-distance communication developed through our wireless technology. It can be utilized as a highly reliable telecommunication system for various industrial applications including civil engineering, construction, vehicles, and agriculture. 【Features】 ■ ARIB STD-T67 construction design certification obtained ■ Communication distance is approximately 300 to 400 meters in line of sight ■ Can transmit approximately 50,000 times using two AA batteries ■ Achieves a Hamming distance of 6 to ensure safety *For more details, please refer to the related links or feel free to contact us.

The "KST426W-3" is a three-point waterproof remote control that does not require a radio station license with a technical compliance mark. Designed for "light industry" applications, it can easily be wireless in harsh environments such as civil engineering, construction, vehicles, welfare, and agriculture. To ensure safe use in tough environments like outdoor work, its robustness and waterproofing have been enhanced, enabling reliable long-distance communication developed through our wireless technology. It can be utilized as a highly reliable telecommunication system for various industrial applications such as civil engineering, construction, vehicles, and agriculture. 【Features】 ■ ARIB STD-T67 construction design certification obtained ■ Communication distance is approximately 300 to 400 meters in line of sight ■ Can transmit about 50,000 times using two AA batteries ■ Achieves a Hamming distance of 6 to ensure safety *For more details, please refer to the related links or feel free to contact us.

The "KSR426W-A" is a waterproof output unit equipped with four control outputs and four selectable output modes according to application. It is the successor to the KSR426W and now supports the highly requested DC 24V. Designed for "light industrial" applications, it enables easy wireless implementation even in harsh environments such as civil engineering, construction, vehicles, welfare, and agriculture. To ensure safe use in challenging environments like outdoor work, its robustness and waterproofing have been enhanced, allowing for reliable long-distance communication developed through our wireless technology. It can be utilized as a highly reliable telecommunication system for various industrial applications, including civil engineering, construction, vehicles, welfare, and agriculture. 【Features】 ■ PhotoMOS relay (4 outputs) 　Each output: up to 48V, 100 mA (DC) ■ Communication distance is approximately 300 to 400m in line of sight ■ Up to 100 transmitters can be registered ■ Achieves a Hamming distance of 6 to ensure safety *For more details, please refer to the related links or feel free to contact us.

The Telecon Switch Transmitter WT-01 is a specific low-power radio device compliant with "ARIB STD-T67." It has a technical compliance mark, allowing it to be used without a radio station license. It can be combined with the Telecon Switch Receiver WR-01 and the Telecommand Unit CDT-RX-03M to create a telecon system. 【Features】 ■ Construction design certification obtained ■ Waterproof for everyday life

The Telecon Switch Transmitter WT-02 is a specific low-power radio device compliant with "ARIB STD-T67." It has a technical compliance mark, allowing it to be used without a radio station license. It can be combined with the Telecon Switch Receiver WR-01 and the Telecommand Unit CDT-RX-03M to create a telecon system. 【Features】 ■ Construction design certification obtained ■ Waterproof for everyday life

The WR-01A is a two-contact control receiver equipped with a power MOSFET that can directly drive relays. The main unit is IPX5 rated for outdoor use, and the connector complies with JIS D0203 S2. It can register up to 32 transmitters, allowing control of the WR-01A from multiple transmitters. Additionally, it features four selectable output modes depending on the application. The compatible transmitters are WT-01A (WT-01), WT-02A (WT-02), and CDT-TX-03M. 【Features】 ■ The main unit is equivalent to IPX5, and the connector complies with JIS D0203 S2 ■ Direct relay drive with two MOSFET outputs ■ Low voltage and low current consumption operation

The WR-01 is a two-contact control receiver equipped with a power MOSFET that can directly drive relays. The main unit is IPX5 rated for outdoor use, and the connector complies with JIS D0203 S2. It can register up to 32 transmitters, allowing control of the WR-01 from multiple transmitters. Additionally, it features four selectable output modes depending on the application. The compatible transmitters are WT-01, WT-02, and CDT-TX-02M. 【Features】 ■ The main unit is equivalent to IPX5, and the connector complies with JIS D0203 S2 ■ Direct relay drive with two MOSFET outputs ■ Low voltage and low current consumption operation

The RT-3B is a specific low-power radio device operating in the 315MHz band, compliant with "ARIB STD-T93," and comes with a technical compliance mark. Compared to weak radio remote control devices, it allows for longer and more stable communication distances. Additionally, it does not have the directionality of infrared remote controls, enabling use without worrying about the orientation or location of the transmitter. It can be used in combination with the RR-1A and RRM-1A. 【Features】 ■ One-shot transmission with 3 buttons ■ Communication distance of approximately 50 meters in line of sight ■ Operation confirmation with LED and buzzer ■ Lightweight and slim design

The RT-4B is a specific low-power radio device that operates in the 315MHz band and complies with "ARIB STD-T93," featuring a technical compliance mark. Compared to weak radio remote control devices, it allows for longer and more stable communication distances. Additionally, it does not have the directional limitations of infrared remote controls, enabling use without concern for the orientation or location of the transmitter. It can be used in combination with the RR-1A or RRM-1A. 【Features】 ■ One-shot transmission with 4 buttons ■ Communication distance of approximately 50 meters in line of sight ■ Operation confirmation with LED and buzzer ■ Lightweight and slim design

The remote control receiver RR-1A receives and outputs contact information from the transmitter. There are four contact outputs, and it supports three output modes. It also supports serial data output. Up to 32 transmitter IDs can be registered. It can be used in combination with RT-3B / RT-4B / RTM-1B. 【Features】 ■ Capable of 4 contact outputs ■ Supports three output modes: one-shot, toggle, switching ■ Up to 32 transmitter IDs can be registered ■ Communication distance is approximately 50 meters in line of sight.

The CDT-TX-03M is a specific low-power telecommand transmission module capable of transmitting six contact signals. It is equipped with a technical compliance mark, allowing it to be used without a radio station license. Utilizing MSK modulation, it can achieve long-distance communication of 500 to 800 meters when combined with the receiving module CDT-RX-03M or the telecommunication receiver WR-01. The current consumption when idle is less than 1μA, making it ideal for battery use. 【Features】 ■ Certified for construction design ■ Supports up to 6 contact inputs ■ Ideal for battery use (idle: 1μA) ■ Operates at low voltage and low current consumption

The CDT-RX-03M is a specific low-power telecommand receiving module that can receive six switch signals. It uses power MOS-FETs capable of high isolation for output, allowing for the connection of high voltage and high current loads in both DC and AC. The CDT-RX-03M features a high-sensitivity receiver using MSK modulation, enabling long-distance communication of 500 to 800 meters. By combining it with the transmission unit CDT-TX-02M and various remote controls (WT-01 / WT-02), you can easily create a telecontrol system. 【Features】 ■ 6 contact outputs using photo MOS-FETs with high isolation capability 　 Maximum: AC/DC 48V, 100mA ■ Supports output for up to 6 contacts

The RTM-1B is a radio transmission module for specific low-power wireless communication that conforms to the standard "ARIB STD-T93." It can wirelessly transmit input signals from 4 contacts. Since it has the Technical Compliance Mark, it can be incorporated into devices without the need for a license application by the customer. Compared to conventional weak wireless and infrared remote controls, it offers a longer communication distance and stable communication without worrying about location or orientation. It can be used in combination with the RR-1A or RRM-1A. 【Features】 ■ Construction design certification obtained ■ One-shot transmission for 4 contacts ■ Communication distance of approximately 50 meters in line of sight ■ Lightweight and compact

The 4-point wireless receiving module RRM-1A receives and outputs contact information from transmitters (RT-3B / RT-4B / RTM-1B). It has 4 contact outputs and supports 3 output modes. It also supports serial data output. Up to 32 transmitter IDs can be registered. The transmitters that can be used are RT-3B, RT-4B, and RTM-1A. 【Features】 ■ 4-point output ■ Up to 32 transmitter IDs can be registered ■ Communication distance is approximately 50 meters in line of sight

We offer a variety of wireless remote control products tailored to your usage needs. - KST426W/KSR426W-A Usable for ON/OFF switching purposes. Designed to enhance waterproofing and durability for industrial applications. Compatible with 2 to 4 button remotes. - KST2.4W/KSR2.4 Usable for purposes where it is ON while pressed. Designed to enhance waterproofing and durability for industrial applications. Compatible with 2 to 4 button remotes. - WT-01/WT-02/WR-01A Usable for ON/OFF switching purposes. Supports everyday waterproofing and is compatible with 1 or 2 buttons. - NT-4/NR-1 Usable for purposes where it is ON while pressed. Compact remote that can be carried in a pocket. Compatible with 3, 4, or 6 contacts. - RT-3B/RT-4B/RR-1A Usable for ON/OFF switching purposes. Designed for simple remote control applications. Compatible with 3 or 4 buttons. In addition to the above remote control products, we also handle various products compatible with harnesses and terminal blocks for different contact communications. Please feel free to contact us for assistance in selecting models.

The KSR426 is an output unit equipped with four control outputs and four selectable output modes based on application needs. Designed for "light industry" applications, it enables easy wireless functionality even in harsh environments such as civil engineering, construction, vehicles, welfare, and agriculture. To ensure safe use in tough conditions like outdoor work, it has enhanced robustness and waterproofing, allowing for reliable long-distance communication developed through our wireless technology. It can be utilized as a highly reliable telecommunication system for various industrial applications including civil engineering, construction, vehicles, and agriculture. 【Features】 ■ PhotoMOS relay (4 outputs) 　Each output: Max 48V, 100 mA (DC) ■ Communication distance of approximately 300 to 400m in line of sight ■ Up to 100 transmitters can be registered ■ Achieves a Hamming distance of 6 to ensure safety *For more details, please refer to the related links or feel free to contact us.

The "KSR426W" is a waterproof output unit equipped with four control outputs and four selectable output modes depending on the application. Designed for "light industry" applications, it can easily be wireless-enabled even in harsh usage environments such as civil engineering, construction, vehicles, welfare, and agriculture. To ensure safe use in tough environments like outdoor work, its robustness and waterproofing have been enhanced, enabling reliable long-distance communication developed through our wireless technology. It can be utilized as a highly reliable telecommunication system for various industrial applications such as civil engineering, construction, vehicles, and agriculture. 【Features】 ■ PhotoMOS relay (4 outputs) 　Each output: Maximum 48V, 100 mA (DC) ■ Communication distance is approximately 300 to 400m in line of sight ■ Up to 100 transmitters can be registered ■ Achieves a Hamming distance of 6 to ensure safety *For more details, please refer to the related links or feel free to contact us.