Frequently Asked Questions (FAQ)

Welcome to YIS Marine - Marine Electrical Products Manufacturer in Taiwan.

Technical Articles


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The IP Rating (Ingress Protection Rating) refers to the different levels of protection a product provides against foreign objects (such as fingers, wires and dusts) and water ingress. The first digit is the protection...

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In previous title we have shared what are the IP Ratings and how to choose the rating for your products. When designing the products, we need to test them to ensure that the products would pass the rating...

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In most Yachts and Caravans (Camper Vans), a second battery (also named dual battery setup) is often pre-installed in factory or modification shop. But if you’re going to convert your truck or RV into...

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VSR (Voltage Sensitive Relay) or ACR (Automatic Charging Relay) are automatically controlled relay switches that allow two batteries to be combined when charging, and to be isolated when not charging and current...

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Marine Accessories, Switch Panels, Fuses, Circuit Breakers, Switches, Lights Since 1992 | Yih Sean Enterprise Co., Ltd.

Based in Taiwan, China since 1992, Yih Sean Enterprise Co., Ltd. is a marine electrical products manufacturer. Main marine and boat products, including 12/24V accessories, switch panels, fuses, circuit breakers, switches and lights, which meet international safety standards.

YIS Marine is a professional manufacturer devoted to providing high quality marine electrical and electronics products. By designing and manufacturing in-house and having quality control at Taiwan headquarter, we are able to offer high quality marine products at competitive prices. with more than 20 years manufacturing experience for Marine Products, Switch Panel, Led Light, Switch, Plug, Socket, Terminal Block and Bus Bar in Taiwan.

YIS Marine has been offering customers high-quality marine and boat electrical products, both with advanced technology and 20 years of experience, YIS Marine ensures each customer's demands are met.