laserman I have bought several of this type, it has no filter and therefore needs no cleaning. The ioniser works separate from the ozonizer. . Do not use it in a small room without ventilation , like a bedroom. It is suitable for 20-40 m2 but always ventilate.

laserman 800 mW top value, the light is to pink , because the green laser is to weak , so the 300 mE module offers less light but the color is more white, saves you money.. The beamquality is certainly not bad, only large distances give te effect of different divergence of the laserdiodes but the alignment is ok!

laserman The durability exceeds one year mtbf