... button, ultrathin, light quality, protable.Touch-key count up to 64, up to 64 kinds of mode function, small volume , more ... state, realize save electricity, extending battery life. Technical Parameters:working temperature: -20-60supply voltage: DC5V, 12V ,18V, 24V < optional > ( supply ... remote when not use for a long time, suggest to take down the battery.Package Included:1*led touch controller1*4 ...