Private public address systems equipment for exhibitions and conferences when personal, direct, discreet and quiet communication is required.Silent PA silent conference systems enables direct communication with your delegates wherever they are without PA speakers blaring away and interrupting others at a conference or exhibition and in any language.At a trade show customers can walk between exhibits in their own time and listen to talks from various speakers within each area regardless of sound from various pieces of machinery and other speakers.When multi-theatre exhibitions are used delegates can move from area to area and simply change their IR (infra-red) or RF (radio-frequency) receiver channels to suit the area they are in. It’s very simple and we have unique 3cm large back-lit displays on our receivers that allow easy selection of channel, stand or room numbers that even visually impaired delegates can use with ease.We use either IR (infra-red) or RF (radio frequency) speech receivers.Both have their advantages - both technically and cost wise. Both cannot be eavesdropped as with IR you must be in the same room to hear the IR and the ListenTalk RF system has advanced encryption algorithms. We will advise you of the pros, cons and price differences of course. Our digital infra-red transmitter is located in a central sound control room and a simple coaxial cable is looped between each IR radiator in each area or booth.Our digital IR radiators in each theatre or area which are wired from the control room.Our digital IR receivers either located in each theatre or distributed at entrances so delegates can move with them.Usually a technician to take care of changes, power disruptions or whatever.It’s really very simple.