Quantity: 1 set This spare 6CH receiver units are specifically for use with the fly sky 6CH CT6B PC programmable 2.4GHz transmitters. These are so intexpensive you can drop one in all your aircraft & use the same transmitter Features: Channels: 6 Channels Model Type: Heli, Airplane, Gliders RF Power: Less than 20db Modulation: GFSK Code Type: PCM Sensitivity: 1024 Low Voltage Warning: LED DSC Port: Yes Charger Port: Yes Product Dimensions:1.65x0.91x0.55inches;0.39ounces Shipping Weight:0.8ounces