The FS-GT3B is a 3-channel transmitter designed for cars and boats. It features the AFHDS protocol, backlit LCD screen, clean and clear interface and a full-angle gain antenna. Note that FS-GT3B only supports AFHDS series receivers, such as FS-GR3E and FS-GR3F. FS-GT3B is not compatible with AFHDS_2A series receivers. Product Model: FS-GT3B Channels: 3 Applicable models: RC Car, RC Boat Wireless frequency: 2.4GHz Transmission power: <20 dBm Wireless protocol: AFHDS Range: 100 to 200m (ground) Channel resolution: 1024 Battery: 1.5AA * 8 (Not Included) Charging port: None Low voltage alarm: <9V Antenna type: external single antenna Large-size Display: HTM blue film negative display, LCD white backlight Data port: PPM (DSC interface can output PPM connection. Simulator dongle does not include the cable) Temperature range: 0 degrees C — + 60 degrees C Humidity range: 20% -95% Online update: No Color: Black Dimensions: 6.10*4.92*10.63 inch, 155 * 125 * 270mm Weight: 14 oz 397g Certification: CE, FCC ID: N4ZFLYSKYGT3B FS-GR3E RC Receiver Product Model: FS-GR3E PWM channels: 3 Wireless frequency: 2.4GHz Wireless protocol: AFHDS Range: 100 to 200m (ground) Antenna type: single antenna (150mm) Power: 4.2-6.5V RSSI: Not supported Data port: PWM (FS-GR3E does not support PPM output) Temperature range: 0 degrees C — + 60 degrees C Humidity range: 20% -95% Online update: No Dimensions: 35 * 22 * 12 mm Weight: 5 g Package Includes: FS-GT3B Transmitter *1 FS-GR3E Receiver *1 Bind Cable *1 AA Batteries not Included...see more