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: 30x17x6.2 mm.
Weight: 3.8 g
16/24 Configurable SBUS Channels
4 High-precision PWM Channels
Operating Voltage Range: 3.5 - 10 V
Operating Current: <60mA at 5V
Control Range: Full range with telemetry
(Full Range: >2km, range may vary based on local conditions.)
Voltage Measurement Range via AIN2 (External device): 0-3.3 V
Compatibility: All FrSky ACCESS transmitters