Description: *Protect your fluorescent tube as there's no flashing and buzzing when powered on. *Enabling advancements and can provide energy savings in a wide range of indoor and outdoor lighting applications such as street lights, indoor down lights, ceiling lights, displays and channel lighting. *Can be used in offices, classrooms, factory, and meeting rooms. Specifications: Power: 22W - 40W Working Voltage: AC220V Wire Length: 125mm / 5" Overall Size: 103mm x 45mm x 29mm / 4.05" x 1.8" x 1.1"(L*W*H) Package Content: 1 x Fluorescent Lamp Ballasts