Radiomaster ERS-RB01 RPM-CDI

Overview:
The Radiomaster ERS-RC01 RPM-CDI is suited to pilots who require reliable engine RPM telemetry from CDI-equipped gasoline engines and want to integrate those readings directly into an ExpressLRS telemetry stream for real-time monitoring. It connects directly to the CDI output and transmits RPM data via a compatible ExpressLRS PWM receiver to an EdgeTX radio, offering precise telemetry for model aircraft, cars and other internal combustion applications. The module supports daisy-chaining with other ERS sensors, making it adaptable for expanded telemetry setups.

Features:
- Measures and transmits engine RPM with high precision for telemetry display on compatible radios.
- Integrates natively with ExpressLRS systems through the CRSF protocol for seamless data transfer.
- Designed for direct plug-in connection to CDI ignition outputs with minimal setup required.
- Compact and lightweight construction suited to models where space and weight are at a premium.
- Supports expansion by allowing connection of additional ERS sensors in series.

Specification:
- Model: Radiomaster ERS-RC01 RPM-CDI
Operating voltage: 5–8.4V
- Operating current: 8mA
- Connector type: 3-pin interface
- Supported ignition: CDI gasoline ignition systems
- RPM measurement range: 200–300000RPM
- Accuracy: ±0.1%
- Temperature operating range: −10℃ to +85℃
- Size: 28×12×8mm
- Weight: 6g

Included:
- 1x Radiomaster ERS-RC01 RPM-CDI