Futaba R404SBS-E F-4G 4-Channel SR Receiver, 3.7–7.4V, 5.7g, S.Bus2, for EP RC Racing Cars
Overview
The Futaba R404SBS-E is a lightweight. ultra-compact F-4G telemetry receiver engineered for high-level electric-powered RC racing. With support for SR (Super Response) mode and S.Bus2. it's purpose-built for tight chassis and maximum control accuracy. This is Futaba's most responsive indoor-optimized receiver to date.
⚠️ Do not use with gas-powered (GP) vehicles
⚠️ Only use SR-compatible digital servos in SR mode
Key Specifications
| Parameter | Value |
|---|---|
| Modulation System | F-4G (with SR mode support) |
| Channels | 4 |
| Output | S.Bus2 |
| Operating Voltage | DC 3.7V – 7.4V |
| Size | 25.5 × 20.7 × 10.6 mm |
| Size (inch) | 1.00" × 0.81" × 0.42" |
| Weight | 5.7g (0.2 oz) |
Notable Features
Futaba's Fastest Receiver: Leveraging F-4G and SR mode for unmatched control latency and stability.
Featherweight Design: Weighs just 5.7g. ideal for high-end 1/10 EP touring cars with limited space.
S.Bus2 Compatibility: Supports telemetry sensors and simplifies wiring for multi-servo setups.
Voltage Flexibility: Operates from 3.7V to 7.4V. compatible with low-voltage LiPo packs.
Ideal For
Indoor electric touring cars
Pro-class EP racing setups requiring ultra-fast input response
Chassis with space constraints and weight sensitivity