TFR4 is support CPPM and RSSI (PWM) output - If CH3 and CH4 are connected by a jumper, CH1 will output CPPM for CH1~CH8, and CH2 will output RSSI (PWM).
TFR4 has two selectable failsafe setting options.

Features:

• Compatible with FASST 2.4G: Air Systems (7CH Mode/Multi Mode) & Surface Systems (C1 Mode).
• CPPM and RSSI (PWM) output - If CH3 and CH4 are connected by a jumper, CH1 will output CPPM for CH1~CH8,and CH2 will output RSSI (PWM).
• Lighter weight and physically smaller.

Specifications:

• Number of Channels: 4
• Dimension: 34 x 19 x 8mm
• Weight: 6.2g
• Operating VoltageRange: 3.5V~10V
• Operating TemperatureRange: -10°C~80°C

Compatibility:

• FASST 2.4G:
• Air Systems (7CH Mode/Multi Mode): 6EX, 7C, TM-7, TM-8, T8FG, T10C, TM-10, T10CG, T12Z, T12FG, TM-14, T14MZ, etc.
• Surface Systems (C1 Mode): 3PK 4PK/4PKS etc.

What's in the Box:

• 1 x TFR4
• 2x Short tool
• 1 x Manual