Key 4-LU 10a A4 is a high quality and multifunctional electric key that allows you to manage four electrical circuits 1-21 at the same time. This key allows you to operate in power 10A, to manage various electrical systems effectively and securely. This component, which is gray, is perfectly adapted to the interior with modern and stylish design and looks beautiful in aesthetics. This key, produced by the Aylex brand, made of high quality materials and longevity. Suitable for use in both internal and external environments and installation is simple and safe. This component ensures safe energy use by ensuring the proper operation of electrical systems.