16-channel digital voice transmission system with 863-865 MHz frequency. Suitable as a tour guide system, trainer/student system and for any other application in which a certain voice source is to be distributed to one or more receivers. It features high resistance to interference due to digital transmisison and parallel operation of up to 4 different channels possible without any interference. 16-channel miniature receiver, with intercom function. It is equipped by push-button for intercom function, built-in microphone, LCD for indicating channel, carrier signal, volume and battery status, power-saving function and Micro USB charging connection for ATS-12CB, ATS-35CB or USB charger. Supplied with matching clip-on earphone. Power supply via integrated rech. lithium battery.