bids are invited for 1. product 1 - supply, installation and testing of 3500 va, 36v pure sine wave home ups / inverter including conveyance and all other charges with the minimum features / specifications as below. dsp ( digital signal processor ) based, asic ( auto sense intelligent control ) technology, power factor controlled battery charger, lcd display -displays state of battery voltage and charge, ac mains input voltage, display actual load connected in %, display overload, short circuit trip, battery low trip, ac mains fuse blown, etc., electrolyte level sensor indicator: for indicating battery water level low, protection: high-quality protection built up in the pcb. 2- year warranty. recommended make ups: hykon / apc / luminous supply, installation and testing of 100 ah c10 rating battery ( 3 no.s ) with suitable battery tray with a 4-year manufacturer warranty recommended model: exide / luminous- 1 no.s 2. product 2- supply & installation of desktop - 5 no.s description specification processor make intel core i3 processor 11 gen or higher, ram 8gb, ssd 512gb, operating system ubuntu, 18.5 inch or more full hd ( 1920 x 1080 ) , led backlight antiglare display, type of keyboard and mouse standard wired keyboard and mouse oem onsite warranty 3 years. preffered make: hp, dell, acer 3. product 3 - supply & installation of laptop - 2 no.s description specification processor make intel core i3 processor 11 gen or higher, ram 8gb, ssd 512gb, operating system ubuntu, 14 inches or more antiglare hd led backlit display, wireless connectivity: integrated wireless b / g / n, integrated bluetooth speaker: integrated stereo speaker, expansion port: 3 usb port ( at least two number of usb 3.0 and one number of type c ) , 10 / 100 / 1000 ethernet card, hdmi, 1 headphone / microphone combo, power supply: 230v, 50hz ac supply with rechargeable battery pack comprising of li-polymer battery / li-ion polymer battery warranty: 3 years comprehensive onsite oem warranty including battery preferred make: hp, dell 4. product 4- supply of long throw model dlp projector having following specification : resolution: xga ( 1024 x 768 ) brightness: 3600ansi, contrast ratio: 20000:1, - 3 no.s recommended make: benq, dell 5. product 5- desktop speakers ( pairs ) & head phone – 5 no.s supply of usb speaker having the following specifications: 2.0 multimedia stereo speaker, usb powered hardwired 3.5 mm connection ( for audio ) , mesh in front to safeguard speaker diaphragm frequency response - 180hz - 18khz output rms power minimum 2.5w, +2.5w, s / n ratio ->= 65db ( q3 ) total quantity : 16