Owfeel DC 12V One Transmitter 8X 1 Channel Relays Learning Smart Wireless Remote Control Switch Black&White Transmitter 1.One channel of output, the output can be independent, but also inching and interlocked 2.Using wireless encoding technique, no direction, no mutual interference 3.Upgrade new high-speed diode, more stable and durable. 4.Suitable for lights, electrically operated doors, windows, curtains, etc. 5.Learning type can be paired with more than one control.