In Stock With Supplier
Delivery Included
1 Year Warranty
The Spektrum P-SPMXME1120 Firma 120A Smart ESC with 3S–6S LiPo support, IC5 input, and 830A burst current is a waterproof, high-performance brushless electronic speed control built for serious RC marine enthusiasts. Designed for offshore racers, catamarans, and deep-V hulls, this ESC delivers 120A of continuous current and supports aggressive throttle profiles with up to 830A burst capacity. Featuring Smart telemetry, programmable reverse, and a rugged heat-dissipating design, the P-SPMXME1120 offers plug-and-play simplicity with advanced diagnostics and protection protocols for reliable operation in demanding aquatic environments.
Key features of the Spektrum P-SPMXME1120 Firma 120A Smart Marine ESC
- Smart telemetry – real-time feedback on voltage, current, temperature, and RPM via single-wire link
- Waterproof construction – fully sealed housing for splash, submersion, and high-humidity protection
- Programmable reverse – customizable throttle behavior for maneuverability and braking
- Selectable BEC – 6V or 7V output at 4A continuous for receiver and servo power
- 5.5mm motor bullets – Castle-style connectors for secure high-current motor integration
- Plug-and-play setup – pre-configured for marine use with IC5 battery input
- Firmware updatable – supports SmartLink USB and Programming Box for field tuning
Why is the Spektrum P-SPMXME1120 ideal for RC boat applications?
The Spektrum P-SPMXME1120 waterproof marine ESC with Smart telemetry, 5.5mm motor bullets, and 4A BEC is engineered for high-output brushless RC boats operating on 3S–6S LiPo setups. Its waterproof rating ensures reliable performance in wet conditions, while the 120A continuous current and 830A burst capacity support powerful motors and aggressive throttle curves. Whether you're racing offshore or cruising in a deep-V hull, this ESC provides the durability, configurability, and telemetry feedback needed for confident control and peak performance.
How does Smart telemetry improve marine diagnostics?
Smart technology transforms the Spektrum digital boat ESC with 120A continuous current, 830A burst, and single-wire telemetry feedback into a real-time diagnostic system. Through the throttle channel, the ESC transmits key data—battery voltage, current draw, temperature, and RPM—directly to your Spektrum transmitter. No additional sensors or modules are required, simplifying installation and reducing onboard clutter. This allows boaters to monitor system health and make informed adjustments during operation, enhancing safety and performance.
What protection features are built into the ESC?
The Spektrum P-SPMXME1120 brushless ESC for RC boats with programmable reverse and thermal protection includes multiple safeguards to ensure safe operation. Over-current protection prevents electrical overloads, thermal protection guards against overheating, and low-voltage cutoff protects batteries from deep discharge. Failsafe logic ensures controlled shutdown in case of signal loss, while the rugged plastic case and aluminum heat sink maintain structural integrity and thermal stability under load.
How does the cooling system support high-performance use?
The high-performance boat ESC with plug-and-play setup, cooling fan, and firmware updatable via SmartLink is designed to handle sustained high-current operation. Its integrated aluminum heat sink and active cooling fan dissipate heat efficiently, preventing thermal shutdown during extended runs. Combined with firmware updatability and programmable features like throttle curve and timing, this ESC offers a customizable and reliable power solution for competitive and recreational marine setups.
Buy Spektrum P-SPMXME1120 Firma 120A Smart ESC for 3S–6S brushless RC boats and high-performance marine setups.
Brand, Model and Product Type
- Brand: Spektrum
- Model: P-SPMXME1120
- Product Type: Spektrum P-SPMXME1120 Firma 120A Smart ESC with 3S–6S LiPo support, IC5 input, and 830A burst current, Spektrum P-SPMXME1120 waterproof marine ESC with Smart telemetry, 5.5mm motor bullets, and 4A BEC, Spektrum P-SPMXME1120 brushless ESC for RC boats with programmable reverse and thermal protection, Smart marine ESC for offshore racers, catamarans, and deep-V hulls with telemetry and failsafe logic
Electrical and Performance Specifications
- ESC Type: Brushless – optimized for high-efficiency marine motor control
- Application: Marine – designed for RC boats, offshore racers, and catamarans
- Input Voltage: 3S–6S LiPo (11.1V–22.2V) – supports HV setups
- Maximum Continuous Current: 120A – sustained output for demanding throttle profiles
- Maximum Burst Current: 830A – short-duration peak power handling
Connector and Lead Configuration
- Battery Connector: IC5 – high heat-resistant input, EC5 compatible
- Motor Output Lead: Castle 5.5mm bullet connectors – secure high-current motor integration
Processor and Control Features
- Processor: 32-bit ARM M4 – delivers high-resolution signal input and motor output
- Programmable: Yes – supports timing, cutoff, throttle curve, and more via Smart ESC Programming Box
- Reverse Function: Yes – programmable for braking and maneuverability
Telemetry and Smart Technology
- Telemetry: Single-wire Smart telemetry – transmits RPM, voltage, current, and temperature
- Firmware Updates: Supported – via SmartLink USB or Programming Box
Protection and Safety Features
- Waterproof Rating: Yes – fully sealed for marine use
- Failsafe Protection: Yes – ensures controlled shutdown during signal loss
- Thermal Protection: Yes – prevents overheating during extended operation
- Over-Current Protection: Yes – safeguards against electrical surges
- Low-Voltage Cutoff: Yes – protects battery from deep discharge
BEC Specifications
- BEC Type: Switch-mode – efficient power delivery to receiver and servos
- BEC Voltage: Selectable – 6V or 7V output options
- BEC Continuous Current: 4A – supports standard marine servo systems
Construction and Mounting
- Case Material: Rugged plastic – impact-resistant for aquatic environments
- Heat Sink: Integrated aluminum – supports efficient thermal dissipation
- Cooling Fan: Yes – active cooling for sustained high-current operation
- Mounting Tabs: Included – enables secure installation in boat hulls
What’s in the Box
- 1 × Spektrum Firma 120A Smart Marine ESC
What You Require / What You Will Need
- Spektrum Smart Receiver: Required for telemetry integration
- Spektrum Smart Technology LiPo Battery: Required for full telemetry functionality
- Spektrum Transmitter: Required for Smart telemetry and reverse programming
We want to make sure your delivery goes smoothly, so here are some important details about our service:
- For orders above £120, we offer delivery to most mainland UK addresses. For orders under £120, we can still deliver to Northern Ireland and the outlying isles, as long as the item can be sent by Royal Mail, weighs less than 30kg, and fits within 61cm × 46cm × 46cm. Some highland and remote areas may carry an extra delivery charge as couriers often apply surcharges in these locations. If you live in one of these areas, feel free to contact us before ordering so we can confirm the delivery options and costs for you.
- Most of our products include delivery in the price. If your order is under £90, a small delivery fee will apply but do not worry this will always be clearly shown at checkout before you complete your purchase.
- Depending on what you choose at checkout, your order will usually be delivered either the next working day or within 2 working days. For next day delivery please place your order before 2:00pm. Orders are dispatched Monday to Friday only. Some items may take a little longer and if that is the case we will always show the expected delivery time on the product page.
- If your order includes items with different dispatch times we will normally wait and send everything together once all items are in stock. If one of the items is going to take a while we will give you the choice either wait for everything to arrive or let us send the available items now and deliver the rest later. It is up to you.
- We use trusted delivery partners to make sure your order gets to you safely and on time. We use DPD for next working day deliveries and Royal Mail for the 2 day option.
- As soon as your order is on its way we will send you a tracking number by email. If you provide your mobile number at checkout we will also send delivery updates straight to your phone so you can keep an eye on progress.
- If a product is marked as "Dispatched within 3 working days" delivery usually takes around 3 to 5 working days from when your order is placed.
- For customers in Inverness and other parts of the Scottish Highlands deliveries can take up to 2 working days even if you select next day delivery as couriers do not currently offer a guaranteed next day service to those areas.
