The Monacor ESP-232/SW is a compact PA speaker that can be powered at 100 volt or 8 ohms. You can choose which way you want to use it via a selector on the back. At 100V you can switch between 5, 10, 20 or 30 watts RMS. At 8 ohm, it has a maximum power capacity of 50 watts. The speaker's beautiful black housing has an IP55 rating, which means that the Monacor ESP232/SW is dust and waterproof, which is perfect for outdoor use. Moreover, the speaker was specifically designed to be mounted to a wall via the attached steel bracket. It is a rugged, all-round outdoor speaker.