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Spektrum FIRMA 85A BL Smart ESC/33 (Spektrum XSEMC01 | SPMXSEMC01)

Model: Spektrum XSEMC01
Dist. #: SPMXSEMC01   SKU: SPMXSEMC01

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South Jordan, UT
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Price:  $129.99

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Updated on Aug 29, 2025 05:40:55 PM

FIRMA 85A BL Smart ESC/33...








Item Functions






  • Smart all-in-one telemetry

  • Quick, powerful 32-bit ARM M4 processor

  • Waterproof

  • Several alternatives for simple shows:


    • Button shows

    • Smart ESC Programming Box

    • SmartLink USB Upgrading and Developer application


  • Multi-point protection:


    • Over-current protection

    • Automatic LiPo low-voltage cutoff

    • Thermal protection

    • Failsafe protection


  • Established and designed by Spektrum™ engineers, in partnership with the market's leading ESC maker





  • Carefully picked combination for 4WD 1/10th scale surface area applications running on 3s Lipo setups

  • Includes high efficiency and sturdiness Spektrum Firma 3300kV Brushless motor

  • High current adjustable BEC (6v or 7.4v @ 4 Amps)

  • Compact for simple setup in many applications

  • Ready to set up — no soldering required

  • Rugged plastic case with mounting tabs

  • Aluminum heat sink for high efficiency

  • Cooling fan

  • Adjustable high-power BEC

  • Firmware updatable through the Smart ESC Programming Box

  • High heat-resistant IC™ connectors, in reverse suitable with EC™ connectors

  • Limited 1-year warranty








Item Summary


Like every component in the Spektrum™ Smart ecosystem, Firma™ Smart ESCs combine "plug-and-play" simpleness with the capability to communicate with other Smart electronics — together, creating the best-performing RC system for your vehicle imaginable.


Firma Smart ESCs do far more than control power. They operate like a virtual engineer inside your model, providing a direct course to the vital operating data you need to reach peak efficiency. Firma Smart ESCs give you an additional layer of self-confidence that your electronics are all running at their finest.


With Firma Smart ESCs, you'll be better connected to your vehicle than ever in the past — without setting up extra parts that all work independently of each other. You won't need extra wires, modules, or links. A Firma electronic speed control provides a one-wire option for obtaining telemetry data such as RPM, temperature, battery voltage and capacity.


Firma ESCs not just collect the data but also send it to your transmitter in real time, instead of just saving it for after-run research study. You're able to change settings as needed to increase efficiency on the go. The Firma Smart single-wire telemetry option has been tested for quality and efficiency by the finest brands in RC. Their verdict? Smart technology is both easier and superior!








Needed to Total

  • Spektrum™ Surface Receiver

  • Spektrum Smart Technology LiPo Battery

  • Spektrum Transmitter





What's in the Box?

  • (1) Spektrum™ Firma™ Smart ESC

  • (1) Spektrum Smart sticker sheet

  • (1) Item Handbook








Video Overview






 









WATERPROOF

WATERPROOF

The all-weather, water resistant style of Spektrum™ Firma™ Smart ESCs permits them to carry out in almost any surface under nearly any conditions. Firma ESCs keep you going through dust, gravel, snow, and water.


 





EC3™/EC5™ BACKWARDS COMPATIBLE

EC3™/EC5™ BACKWARDS COMPATIBLE

Firma™ ESCs feature IC™ series battery connectors. The IC series of connectors are designed from the ground up to supply a more strong connection, greater heat resistance, and simple and easy setup. When utilized with an IC3™ or IC5™ connector-equipped Spektrum™ Smart battery, the ESC can receive and transmit battery telemetry data. EC3 and EC5 are also suitable with Firma ESCs for standard operation and ESC telemetry.


 









ONE-WIRE TELEMETRY



ONE-WIRE TELEMETRY



ONE-WIRE TELEMETRY

No requirement to link several wires, sensors, modules, and links. With Firma™ ESCs, simple one-wire telemetry transfers a vast array of data straight to your transmitter in real time, including RPM, voltage, temperature, balance, capacity, and speed.*


*See compatibility chart to learn more.

 








CLEVER INNOVATION BATTERY DATA

SMART TECHNOLOGY BATTERY DATA

When utilized with a Spektrum™ Smart LiPo battery, your Firma™ ESC provides you with the advantage of battery telemetry that's instantly sent to your suitable Spektrum radio in real time. On your transmitter screen you'll exist with valuable information such as number of cycles, battery percentage, specific cell voltage and more!


 





MULTIPLE SHOWS OPTIONS

MULTIPLE PROGRAMMING OPTIONS

Several shows alternatives are offered. Button shows can be utilized with nothing more needed. Utilizing the Smart Firma™ ESC Programming Box, you can quickly change settings at the track to fit driving conditions. An easy-to-use Smart Link USB Upgrading and PC Developer app is also offered.


 







 



FAST, POWERFUL M4 PROCESSOR

FAST, POWERFUL M4 PROCESSOR

The Firma™ ESCs' 32-bit M4 processor produces greater resolution signal input and more accurate motor output.




 









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