Discontinued | This Item is No Longer Available

Firma 120A Brushless Smart ESC, 3S-4S

Item No.
Spektrum Accessories - SPMXSE1120
Selected Store

Product Overview

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

Firma Smart ESCs do much more than regulate power. They function like a virtual engineer inside your model, providing a direct path to the vital operating data you need to reach peak performance. Firma Smart ESCs give you an extra layer of confidence that your electronics are all operating at their best.

With Firma Smart ESCs, you'll be better connected to your vehicle than ever before — without installing extra components 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 solution for obtaining telemetry data such as RPM, temperature, battery voltage and capacity.

Firma ESCs not only gather the data but also send it to your transmitter in real time, instead of only storing it for after-run study. You're able to adjust settings as needed to boost performance on the go. The Firma Smart single-wire telemetry solution has been tested for quality and performance by the best brands in RC. Their verdict? Smart technology is both simpler and superior!

Needed to Complete
  • Spektrumâ„¢ Surface Receiver
  • Spektrum Smart Technology LiPo Battery
  • Spektrum Transmitter
What's in the Box?
  • (1) Spektrumâ„¢ Firmaâ„¢ Smart ESC
  • (1) Spektrum Smart sticker sheet
  • (1) Product Manual
ONE-WIRE TELEMETRY

No need to connect multiple wires, sensors, modules, and links. With Firmaâ„¢ ESCs, simple one-wire telemetry transmits a wide range of data directly to your transmitter in real time, including RPM, voltage, temperature, balance, capacity, and speed.*

*See compatibility chart for more information.

Product Features

  • Smart all-in-one telemetry
  • Fast, powerful 32-bit ARM M4 processor
  • Waterproof
  • Multiple options for easy programming:
    • Button programming
    • Smart ESC Programming Box
    • SmartLink USB Updating and Programmer application
  • Multi-point protection:
    • Over-current protection
    • Automatic LiPo low-voltage cutoff
    • Thermal protection
    • Failsafe protection
  • Developed and designed by Spektrumâ„¢ engineers, in partnership with the industry's leading ESC manufacturer
  • Ideal for 1/8th scale surface applications running on 4s Lipo setups
  • High current adjustable BEC (6v or 7.4v @ 4 Amps)
  • Compact for easy installation in most applications
  • Ready to install — 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 ICâ„¢ connectors, backwards compatible with ECâ„¢ connectors
  • Limited 1-year warranty
WATERPROOF
WATERPROOF

The all-weather, waterproof design of Spektrumâ„¢ Firmaâ„¢ Smart ESCs allows them to perform in nearly any terrain under almost any conditions. Firma ESCs keep you going through dust, gravel, snow, and water.

 

EC3â„¢/EC5â„¢ BACKWARDS COMPATIBLE
EC3â„¢/EC5â„¢ BACKWARDS COMPATIBLE

Firmaâ„¢ ESCs feature ICâ„¢ series battery connectors. The IC series of connectors are designed from the ground up to provide a more solid connection, higher heat resistance, and effortless installation. When used with an IC3â„¢ or IC5â„¢ connector-equipped Spektrumâ„¢ Smart battery, the ESC can receive and transmit battery telemetry data. EC3 and EC5 are also compatible with Firma ESCs for basic operation and ESC telemetry.

 

ONE-WIRE TELEMETRY
ONE-WIRE TELEMETRY
SMART TECHNOLOGY BATTERY DATA
SMART TECHNOLOGY BATTERY DATA

When used with a Spektrumâ„¢ Smart LiPo battery, your Firmaâ„¢ ESC provides you with the benefit of battery telemetry that's automatically transmitted to your compatible Spektrum radio in real time. On your transmitter screen you'll be presented with helpful information such as number of cycles, battery percentage, individual cell voltage and more!

 

MULTIPLE PROGRAMMING OPTIONS
MULTIPLE PROGRAMMING OPTIONS

Multiple programming options are available. Button programming can be used with nothing more needed. Using the Smart Firmaâ„¢ ESC Programming Box, you can easily change settings at the track to suit driving conditions. An easy-to-use Smart Link USB Updating and PC Programmer app is also available.

 

 
FAST, POWERFUL M4 PROCESSOR
FAST, POWERFUL M4 PROCESSOR

The Firmaâ„¢ ESCs' 32-bit M4 processor produces higher resolution signal input and more accurate motor output.

 

Product Specs

Amperage
120A or larger
Application
Surface
Auto Cutoff
Yes
Battery Input Lead
IC5
BEC
Yes
BEC Continous Current
4
BEC Voltage
6 and 7V selectable
Brakes
Yes
Connector Type
IC5, 4mm Bullet
Drive Type
Forward/Brake/Reverse
ESC Type
Brushless
Input Voltage
11.1V to 14.8V (3S – 4S LiPo, 8-12 cell NiMH)
Low-Voltage Cutoff Programmable
Yes
Max Input Voltage
14.8V
Maximum Burst Current
830A
Maximum Continuous Current
120A
Motor Output Lead
4mm
Output Connector
4mm Bullet
Overload Protection
Yes
Product Application
Surface
Product Height
1.33" (34 mm)
Product Length
1.7" (43 mm)
Product Weight
5.4 oz (153g)
Product Width
1.53" (39 mm)
Programmable
Yes
Programming Options
Button, Programming Box, Smartlink App, On Screen Text Gen
Reverse
Yes
Technology
Smart
Time Delay Brake
Yes
Water-Resistant
Yes

Compatibility

No results for your given fitment filters

Video Overview

Spektrum Firma 120A Smart ESC for surface vehicles is waterproof and delivers power and intelligence all-in-one. Without additional sensors or modules, they feed battery and ESC telemetry data straight to your radio in real time, all over one connection.