... 3. 3channels 4. common anode 4 keys wireless RF remote controller,led RGB touch controller,3channels,wholesale &retail.Product ... .Auto dormancy function, the remote control is without buttons state more than 20 seconds, remote will automatic enter the standby ... Parameters:working temperature: -20-60supply voltage: DC5V, 12V ,18V, 24V < optional > ( supply voltage should be marked on order )output ...