The Xhorse XKBU21EN is a 2nd-generation universal wired flip remote featuring a GM/Buick-style 4-button design (Lock, Unlock, Trunk, Panic). It upgrades the older XKBU01EN model by utilizing an XM5118 chip, which drastically reduces power consumption and improves anti-static protection. [1, 2, 3, 4, 5]

