KAA-4R4V-10S dimming actuator is a 4-channel device with high quality independent locking relay for switching on or off, suitable for all types of MEANWELL LED drivers. The KAA-4R4V dimmer actuator is independently configured with a green LED indicator on each channel to indicate switch status. Besides the basic switching function, also a DC 0 (1) -10V signal to perform the driving on the connected driver on each channel. The dimming curve can be adjusted linearly or logarithmically so that the end user has an excellent experience. They also work in secure mode