Features: The F701 Super 7Channel Receiver is a great solution for all model aircraft requiring 7 Channel. This receiver is more powerful than AR6200 and AR6210 Receiver, This 2 path redundancy, the fact each of the two receivers is located in a slightly different location, exposes each to a differentRF environment and creates a bulletproof RFlink in all conditions. Use Special 3bdi Antenna Gain Antenna more than 15db Gain insided. Stronge antiinterferences,distances( Up to2km) Support PPMchannel, for QUADCOPTER,more convenient. Specifications: Type: F701 Aircraft Receiver Channels: 7CH Modulation: support Digital Spread ModulationX Band: 2.4GHz Size:Mixed Weight: 11.5g Voltage: 3.5–9.6V Package Includes: 1Set F701 Aircraft Receiver note: Due to the problemsof lighting effects and shootingangles, there mightbe certain tolerances in the product, please understand. Please allow 0-1cm error due to the manual measurment.