It has 3 buttons, a red stop button, and 2 yellow up and down buttons. You can control to the range you need at willThe outer layer is equipped with a metal lock and key, so there is no need to worry about being operated by othersAdopt high-quality ABS fireproof metal shell, sturdy and durable, efficient and dustproofPure copper contact button, carefully crafted from materialsStyle:CColour:As shownMaterial:ABS+metalPackage Contents:1 set * surface-mounted button kit (with bottom box)Only 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.