... on or off.l Each receiver may connected with 1 control module, and each modules may control 4 channels ... Retardant ABS Technical Data:Norm conforming assemblyQ/67218248-4·1 --2009Power supply100VAC-265VAC, 50/60Hz±1HzPower consumptionIdle≤2W; ... elements1 “CLR” button, 1 “LRN” button , 1 “POWER” LED, 1 button “LRN” LED, 1 “PC Link” LED, 1 “RXD Radio” LED, 1USB port , 1 Output Selection ...