The FTr4 adopts FLYSKY's third-generation automatic frequency hopping digital system, AFHDS 3. It uses a single antenna, bidirectional transmission system to save space and supports standard PPM, S-Bus, and i-Bus signals.

The FTr4 is a small, lightweight 2.4GHz receiver that will accept an input voltage of between 3.5~8.4V, has a range in interference-free open areas of up to 500m, and its unique design includes i-BUS, S-BUS, PPM, and PWM data ports. It has the ability to update firmware online and is compatible with the FLYSKY Paladin PL18, and NB4 radio systems. With all these features it is the perfect choice for drone flying, gliding, and small fixed-wing aircraft.

Features:
• Small and Lightweight
• Bidirectional single antenna
• AFHDS 3 protocol
• Has the ability to be updated online
• Its unique design includes i-BUS, S-BUS, PPM, and PWM data ports
• Up to 500m range in interference-free open areas

Specs:
Type: FLYSKY AFHDS 3 4ch FTr4 Receiver
Frequency: 2.4GHz
Protocol: AFHDS 3
Data Port: i-Bus, S-Bus, PPM, PWM
PWM Channels: 4
RSSI: Yes
Antenna Type: Single antenna
Power Input: 3.5~8.4V
Range: Up to 500m in open areas with no interference
Updates: Available online
Operating Temperature: -15°C~+60°C
Humidity: 20%~95%
Dimensions: 33x20x107mm
Weight: 4.9g
Certification: CE, ROHS, FCC ID: N4ZFGR4P00