bids are invited for digital public address system controller - sitc of ip based digital public address and emergency sound system controller certified to en 54/ iso 7240-16 and compliant with rohs directive including all accessories complete as required (refer technical specification for more details) , digital class d multi channel amplifier - sitc of ip based digital class - d multi -channel amplifier with 600w total power output having 4 or more channels certified to en 54 / iso 7240-16 and compliant with rohs directive including all accessories complete as required (refer technical specification for more details) , desktop call station - sitc of ip based desktop call station for pa system with desktop housing gooseneck microphone, full colour capactive touch display, minimum 12 configurable buttons for zone selection led indications certified to en 54-16 /iso 7240-16, and compliant with the rohs directive including all accessories complete as required (refer technical specification for more details) , 6 watt ceiling mount speaker - sitc of 6 watt en 54 certified ceiling mount speaker with excellent speech & music reproduction having power tapping 6/3/1.5w, ip21 including all accessories complete as required , 30w compact abs cabinet speaker - sitc of 30w compact abs cabinet speaker, input 70v or 100v, maximum power 45w power tapping 30/15/7.5/3.75w, ip65 weather protection including all accessories complete as required , 6w metal grill cabinet mount speaker - sitc of 6w metal grill cabinet wall mount speaker with excellent speech & music reproduction, rated power 6w power tapping 6/3/1.5w, ip21 including all accessories complete as required , end of line device for loudspeaker - sitc of compact end-of-line device for loudspeaker end-of-line supervision and fault detection certified to en 54-16 /iso 7240-16, and compliant with the rohs directive including all accessories complete as required (refer technical specification for more details) , 48 v dc power supply