Optional mode allows users to switch between Open (vacuum valve) and Off (vacuum valve) settings for versatile operation.Electronic valve technology ensures precise control and efficient performance in various applications. construction designed to withstand demanding environments, enhancing and reliability.Easy installation process, making it user-friendly for both professionals and DIY enthusiasts.Compact design allows for space-saving installation without compromising functionality.This product is engineered to provide flexibility and efficiency in its operation. The optional modes cater to different user needs, while the electronic valve technology guarantees accurate performance. Built with durability in mind, it is suitable for various applications and environments. The straightforward installation process ensures that anyone can set it up with ease, and its compact design makes it an ideal choice for limited spaces.Color: Blue & BlackMaterial: Aluminum AlloyPackage Contents:1* Controller Device 1* wire 2 * KeyOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.