The Erone 18 CH transmitter is designed to drive automatic gate systems, rolling shutters and alarm systems, thanks to its very high security coding system (KeeLoq® Hopping code). The device is equipped with 4 buttons: A, B , C, D, through which it is possible to transmit up to 18 different commands. The button C selects the channel and the buttons A, B and D activate the radio transmission. The security code is set-in-factory and it is composed by a S/N, a manufacturer key and by a counter. The full code string is encrypted. Each transmitter has 5+1 serial number pre-programmed, one for each channel. The 5 LED give the status of the corresponding activated channel.