The HumidiCup® S1 is a small size electronic humidifier designed to automatically regulate humidity inside your humidors up to 5 cubic feet size with 300 cigar capacity.  

Humidifier M1

The HumidiCup® M1 is a middle size electronic humidifier designed to automatically regulate humidity inside your small and middle humidors or small cigar cabinet up to 8 cubic feet size with 800 cigar capacity.