This is the Futaba R2004GF 4-Channel 2.4GHz FHSS Receiver. The R2004GF receiver features a flexible coaxial antenna that can be easily positioned inside the model for optimum reception. The R2004GF receiver is compatible only with electronics created specifically for 2.4GHz FHSS systems.
Specifications: Power Requirement: 4.8V or 7.4V shared with servos Current Drain: 30mA at no signal Size: 1.54 x 1.02 x 0.39" (39 x 26 x 10mm) Weight: 0.28oz (8g)
Note: This receiver does not work with the Futaba FASST systems. Use only with the Futaba 4YF 2.4GHz FHSS system. Futaba FASST systems and FHSS systems are not compatible with each other.