The Archer R4 has 4 high-precision PWM channel outputs bundled in a compact light-weight design. It supports full-range signal strength with dual detachable antennas to assure optimal antenna reception and maximum range. In addition to all this, the R4 can also be used as a redundancy receiver along with any other FrSky ACCESS capable receiver equipped with a SBUS port. The best available signal will be used to ensure superior connectivity.

All of the Archer receivers are hyper-matched with the ACCESS protocol. They not only feature wireless firmware upgrades, increased range, and telemetry performance, the R4 now supports more functions like configurable telemetry power, S.Port/F.Port switching and FLR output. Additional valuable features are under development to unlock the true potential of the ACCESS protocol.

• ACCESS protocol with Over The Air (OTA)
• Tiny and lightweight
• Supports signal redundancy (SBUS In)
• Full control range with telemetry
• S.Port / F.Port
• External battery / device voltage detection

• Dimension: 30*17*6.2mm(L*W*H)
• Weight: 3.8g
• 16/24 Configurable SBUS Channels
• 4 High-precision PWM Channels
• Operating Voltage Range: 3.5 -10V
• Operating Current: ＜60mA@5V
• Control Range: Full range* with telemetry
  (*Full Range: ＞2km, range may vary based on local conditions.)
• Voltage Measurement Range via AIN2 (External device): 0-3.3V
• Compatibility: All FrSky ACCESS transmitters