ELSII-10LHMThis Zenitel IP speaker features a 10W Class D amplifier, powered over PoE. This means that the speaker is capable of delivering more than 120dB, depending on the signal input. The Long Horn Variant increases SPL and directivity. This speaker is best used in environments where speakers must be placed at distance from the intended listener, and installation space is less of a concern. With IP, the system is able to monitor and address each speaker