Sanwa RX-71E 2.4GHz 7-Channel Receiver. This receiver is compatible with Sanwa RDS-8000, SD-10G and Aquila-6 applications.

Specifications:
Model: RX-71E
Frequency: 2.4GHz FHSS-1
Input Voltage: 4.8V - 6.0V
Weight: 9.9g w/Case
Dimensions: 47.5x22.5x12.5mm
Fail Safe Support: Yes (CH 1 - CH 4)