... ,four channel,anodized aluminum case Specifications of D58-4 5.8G Four Channel Diversity Receiver:Four groups frequencies can ... 12V DC power adapter--Switch on the power button, LED1,LED2,LED3,LED4 are on means the 4Ch ... RF are working. LED5, LED6, LED7, LED8 are all ... and then apply the power--Switch on the power button--Set RX1,RX2,RX3,RX4 to the same channel--LED5 ...