There are 2 type of beeping sound; the slower one is the 10-second countdown before the light goes on. The more rapid beeping sound is an alarm when the light senses that there are moving objects during the session. This alarm functionality causes the light treatment sessions to be intermittently interrupted. I wonder how many minutes of UV treatment my room is actually getting, because the alarm is so sensitive and shuts off the UV light so frequently. I imagine if you use this product in a very large room, where it shuts itself off less frequently, the light can work pretty well.

Small fragile , arrive broken

Cleans air well

Love it

The scenery is broken. Keep stopping every 3-5 min.

Seems to be working. The air smells fresher. Very sensitive motion dectector. Works through walls. If you have a small house you would have to use at night or whlie your away.

Was shipped from US and took long time to arrive. Does not turn on at all. Hard to assembly and take apart to return. But wayfair returned policy covered it and it was easy to return.

they send defective item and the box is damaged, not sealed also. It looks like the original box is “open box” that was previously opened and returned, and now They send it to a new customer like me. But I return it because it is not totally working at all, the bulb is defective also. I coordinated with them to have full refund. Good thing they refunded 3-5 business days they said