Ideal for home or office use, this medical grade UV light steriliser effectively eliminates bacteria, viruses, and airborne contaminants using UV-C light technology. Perfect for ensuring a clean and safe environment. How to Use Place it the room and ensure that the lamp's rays are able to reach all items that are to be sterilised. It works best in a darkened enclosed room. Ensure that NO ONE IS IN THE ROOM when it is switched on as the UV light is harmful for the eyes. Press the power button once and wait for the lamp to begin beeping its count-down. Quickly leave the room. After 15minutes, check that the lamp's rays are off before opening the door and airing out the room. It is normal for the room to smell musty due to the oxidisation of molecules that came into contact with the UV light.