[. . . ] R303FHS Futaba R303FHS 3 Channel HRS/PPM Auto Detection Synthesized receiver is packed in this set. *Specifications are subject to change without prior notice. 3 Channel, HRS/PPM Auto Detection, Synthesized Receiver Output/Battery Connector "1": CH1 output "2": CH2 output "3": CH3 output "B/C": Power Supply/DSC input First Digit of channel No. [. . . ] And Fail Safe Unit (FSU) is not available. Please make sure t h a t t h e t ra n s m i t t e r ' s modulation is set to "PPM". Otherwise, the servo may result in break-down or cause some improper operation. WARNING Operation with H. R. S mode; mode When susesH. R. Sl ow i n g a l way u e fo l conditions. Servo; 6V type Digital Servo only use only genuine Always transmitters. Futaba the supplied turn slots in 1 Withcorrespondingplastic screwdriver, carefully wish thereceive. each dial to the channel number you to channel 2 Change or select theselected. of the transmitter to match the channel you have 3 Turn on the transmitter first and then turn on the receiver. sure everything is it is advised 4 To make perform a range testworking properlyeverything is that you with the transmitter antenna shortest position. [. . . ] Use the parts specified in the instruction manual and catalog. working properly, then please extend the transmitter antenna completely when running your models. Operating Precautions; Once the R303FHS detect PPM mode or HRS mode, the detected mode is locked as long as the power is ON. [. . . ]