Firma 120A Brushless Smart Marine ESC, 3S-4S
$119.99
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Firma 120A Brushless Smart Marine ESC, 3S-4S
$119.99
Smart Telemetry
Real Time Data Feedback
3S-6S LiPo
High Voltage Power Delivery
120A Continuous
Handles High Amp Loads
Water Cooled
Integrated Water Cooling Manifold
32-Bit ARM
Fast Processing Power Installed
IC5 Connectors
Pre Soldered High Current
Intelligent Marine PowerReal-time telemetry and brushless performance
The Spektrum Firma 120A Brushless Smart Marine ESC brings powerful performance and real-time telemetry straight to your RC boat setup. Operating without extra sensors or complex wiring, this waterproof brushless speed control transfers critical operational data like voltage, RPM, and temperature directly to your transmitter. Engineered for 3S to 6S LiPo power systems, it provides incredible control and peak efficiency for demanding marine applications.
Next-Gen Speed ControlAdvanced telemetry meets extreme water performance
Designed with demanding marine enthusiasts in mind, the Spektrum Firma 120A Brushless Smart Marine ESC functions like a virtual engineer inside your high-performance model. Powered by a fast 32-bit ARM M4 processor, this high-amp marine ESC delivers up to 830A burst current while maintaining optimal operating temperatures thanks to an integrated water cooling manifold. The single-wire Smart technology ecosystem eliminates clutter while sending live battery voltage, ESC temperature, and motor performance data to compatible transmitters. Complete with multi-point protection, failsafe features, and a high-current adjustable BEC, the Firma 120A Smart ESC provides maximum power delivery for 3S-6S brushless motor marine setups.
Technical SpecificationsDetailed specs for precise installation
Part Type
Electronic Speed Control
Technology
Spektrum Smart
Continuous Current
120A
Burst Current
830A
Input Voltage
3S - 6S LiPo
BEC Voltage
6V / 7.4V Selectable (4A Continuous) (cpu)
Water Resistance
Waterproof Marine Design
Connector Type
IC5 / EC5 Compatible
Reverse
Yes (refresh-cw)
Programmable
Yes
Timing
Adjustable
Advanced Controller FeaturesEngineered for durability, power, and connectivity
TelemetryIntegrated Spektrum Smart single-wire system
ProcessorFast and powerful 32-bit ARM M4
Cooling SystemIntegrated water cooling manifold
Voltage ProtectionAutomatic LiPo low-voltage cutoff
ProgrammabilitySimple button, programming box, or USB application
Power ConnectorsHigh heat-resistant IC5 pre-installed
Safety FeaturesThermal, over-current, and failsafe protection
Adjustable BECHigh-current output selectable 6V or 7.4V @ 4A
Frequently Asked QuestionsEverything you need to know
What battery setup works best with the Spektrum Firma 120A Brushless Smart Marine ESC?
The Spektrum Firma 120A Brushless Smart Marine ESC supports 3S to 6S LiPo battery configurations, equipped with high-current IC5 or EC5 connectors for maximum energy flow.
Do I need extra telemetry sensors with the Spektrum Firma 120A Brushless Smart Marine ESC?
No, the Spektrum Firma 120A Brushless Smart Marine ESC features built-in Smart telemetry that transmits real-time data like battery voltage, RPM, and ESC temperature directly to your Spektrum receiver and transmitter over a single wire.
Is the Spektrum Firma 120A Brushless Smart Marine ESC fully waterproof?
Yes, the Spektrum Firma 120A Brushless Smart Marine ESC features a waterproof casing and an integrated water cooling manifold designed specifically to thrive in harsh RC boat environments.
How do I program the settings on the Spektrum Firma 120A Brushless Smart Marine ESC?
You can program the Spektrum Firma 120A Brushless Smart Marine ESC using the integrated programming button, an optional Spektrum Smart ESC Programming Box, or via the SmartLink USB computer application.