Compact and convenient 4xAA Battery,Type-c 5V for instant use(The package does not include batteries and Type-c adapter) The main dimming slider can adjust the values of 1-32 sliders separately or simultaneously Sliders 1-8 can be used as dimming sliders or to control the brightness of the connected lights Automatic memory of each slider parameter when power is off LED displays slider values address code can be freely assigned and set 3-PIN Plug -RJ45 Plug Product size:17.2x9.8x5cm Display screen: Digital tube display screen Power button/1-8 channels: for 3 seconds to turn on. In the power-on state, short once to control channels 1-8. for 3 seconds to turn off. 9-16CH: once to control channels 9-16, and move the slider to modify the value of each channel between 0-255. 17-24CH/ Clear button: once to control channels 17-24, and move the slider to modify the value of each channel between 0-255. Long for 3 seconds to clear all channel values. At this time, the indicator light flashes and the display screen displays "0 0 0". After selecting the channel, you can readjust the brightness of each channel. 25-32CH/ Black field key: Short to control channels 25-32, and move the slider to modify the value of each channel between 0-255; Long for 3 seconds to enter black field mode, the indicator light flashes continuously, and any blue key to exit black field mode. Slide the slider: Slide the slider to adjust the value between 0-255 (the corresponding value is displayed on the display). Color:Black Material:ABS Package Contents: 1 * Stage lighting controller Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.