Cigar Oasis Magna electronic cigar humidifier measures and controls reliably the humidity in display cases, armoires and other large cigar humidors over long periods of time. Guaranteed to keep your cigars always fresh! The Magna is a completely sealed system and only activates on sensors demand to control humidity accurately and display it. The remote display has a six foot extension that can be located wherever the user wishes to mount the display with control buttons to set the humidity. When humidity drops below set point for over two hours, the display flashes indicating low water or major leak in humidor. Features: Transparent base to observe water level, includes auxiliary fan kit, ability to link up to 6 units, micro-usb connections, WiFi capable(optional). Overall dimensions only 6 1/2" wide x 6" high x 13" long. Standard adapter included. Recommended for humidors 10-60 cubic feet (1000 to 3000 cigars capacity).