This is the Futaba R2104GF 2.4GHz FHSS 4-Channel High Voltage Receiver.

FEATURES: For use with the 4-PL S-FHSS four channel surface radio Normal and High-Speed Modes: Normal mode frame rate is (FHSS/S-FHSS) 13.63ms and accepts any type of servos or peripherals. High-Speed mode (in 4PL tx only), with an output of 6.8ms accepts digital servos including the BLS series and most peripheral equipment such as brushless ESCs Flexible coaxial antenna that's easy to position inside a model for ideal reception One year limited warranty through manufacturer beginning at date of purchase

INCLUDES: Futaba R2104GF 2.4GHz FHSS 4-Channel Receiver with instruction sheet

REQUIRES: Installing in model and connecting battery and servos Linking to transmitter

SPECS: Power Requirement: 3.5V - 8.4V shared with servos Voltage: 3.5V - 8.4V Dimensions: 1.54 x 1.02 x 0.39" (39 x 26 x 10mm) Weight: 0.28oz (8g)

COMMENTS: This receiver does not work with the Futaba FASST system. Futaba FASST systems and FHSS are not compatible with each other, updt  

BOX DIMENSIONS: 2.50" W. X 1.38" H. X 3.38" L. BOX WEIGHT: .10 LBS.