bids are invited for delegate unit - sitc of each unit is provided with a 470mm ( 18.5 ) long gooseneckcondenser microphone which is highly sensitive andunidirectional. the microphone is provided with a diffusedled housing to provide positive visual identification ofthe unit in operation. the built-in speaker in each unitprovides clear and crisp sound reinforcement. the outputlevel of the speaker can be adjusted through a recessedvolume control in the unit. each unit has a headphoneoutput, talk switch and a talk led. the mic level ledin the delegate unit flickers to indicate microphone input.rugged and compact die cast aluminum base for better stability of delegate units. , chairman unit - sitc of the chairman unit has a talk switch with led. it also has a priority switch with led. when priority switch is pressed, a chime tone is generated to seek attention and mute the active delegate microphones. rugged and compact die cast aluminum base for better stability of chairman units. each unit is provided with a 470mm ( 18.5 ) long gooseneck condenser microphone which is highly sensitive and unidirectional. , central mixer amplifier - sitc of central amplifier has a digital recorder for recording the proceedings. also, it can playback the pre-recorded messages.switchable send / return facility in central amplifier.three mic inputs and one aux input for various user applications.50w pa amplifier for adequate sound reinforcement.headphone output provided in central amplifier for monitoring purposes.ac mains & 24v dc operation total quantity : 1