bids are invited for computer - display size twenty two inch , projecter short throw - four by three ratio aspect ratio , motorised projecter screen - one hundred twenty inches diagonal project screen eight ft and six feet , laser pointer red green - two hundred meter pointing range ultra powerful laser light , audio dsp twelve channel - people link pro audio dsp has eight channels balanced mic inputs , amplifier two hundred watt - six mic and twenty one aux inputs , wall mount speaker - ahuja speakers maximum output power thirty two watts , collar mic - high quality uhf band frequency dual wireless microphone system two hundred selectable uhf channels , usb three point zero cable thirty meter - active extension cable thirty meter usb male to female cable , usb three point zero cable fiveteenmeter - active extension cable fifteen meter usb male to female cable , hdmi cable thirty meter - immediate connectivity with a high speed hdmi cable , hdmi cable fifteen meter - immediate connectivity with a high speed hdmi cable , cable drum cat six - twenty three awg solid copper conductor for superior conductivity , hdmi switcher four in one out - four inputs one output hdmi switch this hdmi switch four supports gdcp two hdmi two b , cordless mic - frequency response fifty hz and fifteen khz , manageable sw twenty four port total quantity : 43