The button comes with exquisite appearance and high grade, and the elegant white colour is with versatile style. Manufactured by advanced ABS materials with stable performance and high reliability, have a longer service life. The structure is reasonable, and the design is humanized, more advantageous to use, being your more convenience. The external material of the panel is imported high‑grade impact resistance, high temperature resistance, and good finish. Cannot be used alone, need to be with other host (not included) or accessories (not included), such as: button + host (not included) + sound light alarm (not included).