What should be noted when using an ultraviolet sterilizer?

What should be noted when using UV sterilizer products?
1. Regular monitoring of the UV module's lamp intensity is required; replace the lamps if the intensity is less than 70 microwatts or if the cumulative usage time exceeds 1000 hours.
2. It's important to note that UV radiation has a weaker penetration, and in environments with more air dust, the disinfection effect is more likely to decrease.
3. The irradiation must be conducted when the office is unoccupied, with a total duration of approximately 2 hours. During this period, staff members are prohibited from entering the room.
4. The ultraviolet disinfection module's lamps must be wiped with 95% alcohol weekly and a record must be made.
5. Disinfection light tubes should be installed 1 meter above the table.