Compatible with F S-i10, F S-i8, F S-i6, F S-i6s, F S-i6x, F S-i4, F S-i4x, etc. F S series RC transmitter. The two-way transmission can detect the battery voltage of the drone. Use the AFHDS 2A protocol and dual omnidirectional antenna with superior noise reduction techniques. Adopted electromagnetic shielding cover to get better signal and performance. Support 6CH PWM, 18CH I.BUS, and 8CH PPM signal output. Item:F S-X6B Frequency:2.4Ghz Mode:AFHDS 2A Range:500-1500m (in the air) Signal type:PWM, I.BUS, PPM Channels:6CH PWM, 18CH I.BUS, and 8CH PPM Input voltage:4-8.4V Voltage detection:1-4S Suitable for:130, 210, 250 wheelbase FPV Racing Quadcopter Item weight:4.9g Due to different product batches, the appearance may be different, which does not affect use. Colour:As Shown Material:PC+Metal Size:36x22x7.5mm Package Contents: 1 * F S-X6B Receiver Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.