RadioMaster ERS-CU01 Real-Time Current Sensor for compatible ExpressLRS PWM Receivers

The ERS-CU01 Current Sensor is a compact telemetry module for use with compatible ExpressLRS  receivers. Installed inline between the battery and ESC, it measures real-time operating current and voltage sending the data through the ExpressLRSreceiver for display on your EdgeTX radio. This provides instant insight into system load, efficiency, and power consumption across your entire powertrain.

As part of the ERS sensor family, the ERS-CU01 also supports pass-through expansion, allowing easy daisy-chaining with additional telemetry modules. 

Features

• Real-Time Current Monitoring: View live current draw and voltage directly on your radio to better understand system performance and prevent overload conditions.
• Inline Installation: Soldered between the battery and ESC for accurate, full-system current measurement.
• Future-Ready Pass-Through: Includes in-and-out ports for daisy-chaining additional ERS sensors as your telemetry needs grow.
• Seamless ExpressLRS Integration: Designed to work smoothly with compatible ExpressLRS PWM receivers.

Specifications

• Item: ERS-CU01 Current Sensor
• Operating voltage: 5–8.4V
• Operating current: 22mA
• Current range: 1–150A
• Max voltage: 70V
• Current accuracy: ±0.5A
• Voltage accuracy: ±0.1V
• Continuous current: 100A
• Temperature range: –10 ℃ to +85 ℃
• Size: 30 × 25 × 10.5mm
• Weight: 20.6g