Designed for use in lifts, this steriliser is equipped with a replaceable filter which is capable of eliminating viruses, other harmful substances or particles, and even odours. The steriliser is installed on top of the lift from the outside and features a large air duct with intelligently concealed inlet and outlet, which greatly improves the efficiency of the air circulation. The aesthetically appealing device is equipped with a screen installed inside the lift, allowing passengers to read the air quality at any given time.