The 8188 is a SIP compliant IP ceiling speaker for voice paging, emergency notification and playing background music. The speaker is PoE and does not require an additional amplifier. The 8188 is UL2043 certified for installation in air handling spaces. Common application environments include a school, hospital, retail store and office spaces. A Hydrophobic Membrane Screen can be attached to the speaker for placement in areas subject to moisture (e.g. shower).