The Erone 15 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: CLOSE, OPEN, STOP, CHANNEL, through which it is possible to transmit up to 15 different commands. The button CHANNEL selects the channel and the buttons OPEN, CLOSE and STOP 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 got 5 different S/N, one for each channel. The 4 LED give the status of the corresponding activated channel.