The input interface 1y.P2.8.230.B000 for flush or can mounting allows the use of existing conventional switches or buttons with the YESLY system. This is optimal if, for optical or structural reasons, the existing switches or buttons are to be used again â but these smart buttons are integrated into the system via the Bluetooth® Low Energy radio signal. The interface also works with relay outputs or programmable logic controllers and transfers switching commands to the YESLY universe. The device has two separate input channels. Up to 5 light switches (current consumption of glow lamp max. 1 mA) can also be connected. This text is machine translated.