KC3D LLC
SPortBUS Dual Temperature Telemetry Sensor w/ 2x TEMS Probes for FrSky FBUS & S.Port
SPortBUS Dual Temperature Telemetry Sensor w/ 2x TEMS Probes for FrSky FBUS & S.Port
Pre-order — Ships Mid May
⚡ Ships Fast from Massachusetts
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SPortBUS Dual Temperature Telemetry Sensor
The SPortBUS Dual Temperature Telemetry Sensor is a compact FrSky-compatible telemetry module designed for monitoring two independent temperature probes through FBUS or S.Port.
This launch kit includes 2x TEMS-compatible 100K thermistor probes, making it a complete temperature telemetry solution for FrSky radios, Rotorflight flight controllers, nitro helicopters, gas engines, electric models, and custom RC telemetry setups.
1x SPortBUS Dual Temperature Telemetry Sensor
2x TEMS-compatible temperature probes
Key Features
- Dual independent temperature inputs
- Automatic FBUS / S.Port protocol detection
- Compatible with FrSky ETHOS and OpenTX telemetry systems
- Rotorflight-compatible telemetry support
- Compact lightweight inline design
- Includes 2x TEMS-compatible 100K thermistor probes
- Ideal for gas, nitro, electric, helicopter, airplane, and custom RC telemetry applications
- Onboard status LED for quick telemetry status indication
LED Status Indicator
| LED Pattern | Status |
|---|---|
| Slow Blink | No telemetry signal detected |
| Medium Blink | S.Port telemetry active |
| Fast Blink | FBUS telemetry active |
FrSky temperature telemetry sensors may default to a maximum display range of 100°C. For combustion engine monitoring, New England RC recommends increasing the telemetry sensor maximum value to 150°C.
Recommended ETHOS Setup
- Open Model → Telemetry → Sensors
- Select Temp1 or Temp2
- Change the maximum value from 100°C to 150°C
- Save the telemetry configuration
Common Applications
- Nitro helicopter cylinder head temperature monitoring
- Gas engine temperature monitoring
- ESC, BEC, motor, and battery temperature monitoring
- Rotorflight telemetry integration
- Custom FrSky FBUS / S.Port telemetry projects
Probe Compatibility
This sensor is designed around FrSky TEMS-style 100K thermistor probes. Generic 100K thermistors may physically work, but temperature accuracy depends on the thermistor beta value and calibration curve.
For best results, use the included TEMS-compatible probes or confirmed compatible 100K thermistor probes.
Specifications
| Telemetry Protocols | FBUS / S.Port |
| Temperature Inputs | 2 |
| Probe Type | TEMS-compatible 100K thermistor |
| Radio Compatibility | FrSky ETHOS / OpenTX |
| Flight Controller Compatibility | Rotorflight telemetry systems |
| Status Indicator | LED |
Note: Temperature readings may vary depending on probe placement, airflow, mounting method, and thermistor type. Intended for hobby RC telemetry applications.
Design & Collaboration
The SPortBUS Dual Temperature Telemetry Sensor was designed and developed by Keith Williams of KC3D LLC in collaboration with New England RC LLC.
Developed for the RC helicopter and aircraft community, this compact telemetry solution focuses on reliable FrSky telemetry integration and Rotorflight compatibility.
