Crazepony RadioLink T8FB 8CH Transmitter with R8EH Receiver Supporting FUTABA S-BUS PPM PWM for RC Plane with USB Cable 8 Channels - Supports S-BUS, PPM and PWM signal Operating voltage: 6V max Compatible with FUTABA S-BUS connection port, support PWM,PPM and SBUS Controls: One two-way switch, one three-way switch, two VR switches, four trimmers, four phase trimmers, two sticks. Defaulted MODE2, SwB control CH5, VrB control CH6, SwA control CH7, VrA control CH8. Operating current: 19-25mA (input voltage 5V)