Features:1. Press and hold the Binding button, and power on the receiver, green LED flashing fast means in the binding modes.2. Make the transmitter enter BIND modes.3. The LED indicator has become slow flashing means the binding is succeeding.4. Make the transmitter stop the BIND modes, the receiver LED indicator continue to mean receiving signal. Description:Made of sturdy material, it is a sturdyFS-RX2A Pro receiver. Specifications:Item name: FS-RX2A receiverChannel: 10(IBUS), 8(PPM)RF Range: 2.408-2.475GHZNumber of bands: 135RX Sensitivity: -92dBm2.4GHz protocol: AFHDS 2ASignal output: IBUS, PPMAntenna length: 33mmPower: 3.3-5VControl distance: 400m +Current: 30MASize: 12*15mm Package Included:1 * receiverNotes:1. Please allow 0-1 inch error due to manual measurement. Thanks for your understanding.2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from real object.