Check the listing for details. IRX4 Lite 2.4G 4-In-1 TX Transmitter Module Multi-protocol for FrSky DSM2 SFHSS. Condition: New. Listed at 47.90 USD. Description IRX4 Lite 2.4G Transmitter Module 4-In-1 Multi-protocol TX Module with Antenna for FrSky DSM2 SFHSS Materials: http://pan.baidu.com/s/1bokfOjt Attention: We only TX module hardware. Its software is based on open source firmware, which is burned by us, and users should bear the risk of using it. Overview: This four-in-one tuner module integrates four RF chips, CC2500, NRF24L01, A7105, and CYRF6936, into one circuit board. It can identify the PPM signal output by a remote control, and then convert it into the corresponding remote control protocol to control the receiver or the aircraft. Currently, it supports protocols for Walkera DEVO, HorizonHobby DSM2, Flysky, Esky, FrSky, Weili, Hubsan, HISKY, and Futaba SFHSS Assan. The module can more flexibly and conveniently control four different brands of quad-copters, helicopters and fixed-wing aircraft. Since you continue to use the familiar remote control, the operation feel and flight experience are also better. Working Parameters: - Working voltage: 5-9V - Working current: