1. Negative black sceen will bring you to a secret world. 2.4.8 inch Large colorful screen display area, creates your colorful life. 3. Touch buttons to make simple operation. 4. Amazing Silver Frame opens your modern life. 5. The visiable thickenss above the wall is only 15mm. 6. The snap connection allows you to easily install. 7.86mm hidden box and European 60mm round box is suitable. 8. White, black or brushed stainless steel for your selection. 9. Wrap-around cooling holes help heat to escape quickly and avoid affecting temperature detection.