How to Use:Just install it in series in the reversing servo channel to use.Featuers:Voltage: 3.6V-24V.Current: 5A.Weight: 6gSignal type: Servo (automatic detection)Plug type: JRUsage:Servo Signal Reverser can be used in line to reverse the signal to a Type for JR Male and Female.Package:3Packs RC Servo Signal Reverser