Wireless Waterproof Remote Control for Construction Sites, 426MHz Band

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KST426W / KSR426W-A

last updated：Jan 28, 2026

Circuit Design, Inc.

In an outdoor construction site, it is resistant to rain and wind, enabling long-distance operation.

In the construction industry, safety and efficiency are required for the remote operation of heavy machinery and equipment. Particularly in high-altitude work or hazardous locations, it is essential to ensure the operator's safety while enabling swift operations. Traditional wired systems can involve the hassle of wiring and the risk of disconnections, which may decrease work efficiency. Our 426MHz band wireless waterproof remote control achieves stable remote operation outdoors with IP55 equivalent waterproof performance and long-distance communication. 【Usage Scenarios】 - Starting heavy machinery engines - Conveyor control - Operation of temporary traffic signals 【Benefits of Implementation】 - Ensuring operator safety - Improving work efficiency - Reducing wiring costs

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basic information

【Features】 - Dust and waterproof performance equivalent to IP55 - Long-distance communication with a range of 300m to 500m - Reliable operation with minimal malfunctions - Integrated antenna design - Variations with 2 buttons, 3 buttons, and 4 buttons 【Our Strengths】 We have specialized in specific low-power wireless technology for many years, providing high-quality products. We also accommodate customization to meet customer needs, ensuring reliable wireless communication.

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Available for purchase from 1 unit. For price details, please visit our website.

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※For more details, please contact us.

Applications/Examples of results

【Usage】 Ideal for outdoor electric gates, car wash machines, agricultural irrigation pumps, temporary traffic lights, and other sites where both "outdoor installation" and "long-distance control" are required. It is useful in situations where the receiver needs to be exposed externally, such as starting heavy machinery engines, controlling conveyors in dusty environments, and operating cleaning equipment. The integrated antenna design simultaneously improves radio wave conditions and reduces installation costs, contributing to the efficiency of professional industrial sites.

Line up（4）

Model number	overview
KST426W-2	Light Industry 426MHz 2-Contact Specified Low Power Radio Waterproof Remote Control
KST426W-3	Light Industry 426MHz 3-Contact Specific Low Power Radio Waterproof Remote Control
KST426W-4	Light Industry 426MHz 4-Contact Specific Low Power Radio Waterproof Remote Control
KSR426W-A	Light Industry 426MHz Remote Control System Waterproof Output Unit (4 Contact Output)

catalog（1）

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426MHz Band Telecontrol System KST426W / KSR426W

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Company information

Circuit Design, Inc.

Industrial Electrical Equipment

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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.

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