Ceiling Microphone With Patented Beam Forming Technology, Full Rack 19 Inch 1 Ru Processor Mainframe With Sixteenuser , Rimless Low Frequency 134 Mm 5.25 Inchpolypropylene Cone , Four Channel Poe Amplifier , Poepower Injector , Poe Switch In 8 Port , Mounting Installationand Cabling As Per Requirement Of The User Quantity: 88