Using upgraded technology to measure and control humidity accurately, this electronic humidifier is designed to mount on the lid of a large desktop humidor or under a lift out tray and will humidify up to 100 cigars (up to 1.5 cubic feet). Powered by an outlet or using the internal, rechargeable Li-ion battery, the fan pushes out humidity until the desired level is reached while promoting an even distribution of humidity throughout your humidor.
I put the cigar oasis ultra 2.0 in my end table humidor which holds about 200 sticks. I bought it b/c I was having a hard time keeping the humidity above 58%. I still have a few passive humidifiers in there as well and has kept my humidor steady at 67%. The only problem is the cigar oasis turns on about every 5-10 seconds. On for 5 seconds, off for 5 seconds. It does that non-stop. So, it works but I feel that it will break soon if it continues to operate this way. I'll admit that the humidor is on the big side of the range for this humidifier but I thought the passive humidifiers would help it out but I guess not. I read some reviews that had the same problem. I'll contact cigar oasis and write a follow up.