FrSky FAS40 ADV Current Sensor – 40A / 6S, FBUS & Smart Port Telemetry

The FrSky FAS40 ADV is a compact, high-precision current and voltage sensor designed for real-time telemetry monitoring in modern RC systems.

Part of the ADV (Advance) sensor series, it supports both FBUS and Smart Port (S.Port), making it easy to integrate into both new and existing FrSky setups.

Installed inline between your battery and ESC, the FAS40 ADV provides accurate current draw and pack voltage data, helping you monitor power usage, prevent over-discharge, and fine-tune performance.

⚡ REAL-TIME POWER MONITORING

• Measures current up to 40A
• Supports up to 6S LiPo voltage monitoring
• Inline install between battery and ESC

🔌 FBUS + SMART PORT SUPPORT

• Full FBUS compatibility (single-wire telemetry + control)
• Backward compatible with Smart Port (S.Port)
• Clean, simplified wiring with FBUS systems

📡 TELEMETRY READY

• Live current draw feedback
• Battery voltage monitoring
• Ideal for:
  • Flight controllers (Rotorflight, etc.)
  • Radios running ETHOS / EdgeTX telemetry
  • Power system tuning

⚙️ ADV SERIES BENEFITS

• Improved performance over legacy sensors
• Better signal reliability and integration
• Designed for modern FrSky ecosystems

📦 SPECIFICATIONS

• Size: 65.24 × 15.7 × 16.6 mm
• Weight: 15g
• Current Range: 0–40A
• Max Current: 40A
• Max Voltage: 6S LiPo
• Current Draw: 16mA @ 5V
• Compatibility: FrSky FBUS & Smart Port receivers

📦 INCLUDES

• (1) FrSky FAS40 ADV Current Sensor

💡 BEST USE

• Electric helicopters (small–mid setups)
• Fixed wing power monitoring
• Bench testing / telemetry logging
• Any build needing real-time current + voltage data