This is a Spektrum SPMXME1120 Firma 120A Marine Brushless Smart Marine Electronic Speed Controller (ESC, 3S-6S). Fast, powerful 32-bit ARM M4 processor. 120 Amp Continuous current, perfect for demanding high voltage setups. Up to 6S (22.2V) input voltage. Built in Series Connection with high heat resistant IC5 Connectors. No compromise waterproof design. Multiple water cooling jackets provide ample heat disbursement. Multiple options for easy programming. Smart ESC Programming Box. SmartLink USB Updating and Programmer application. Automatic LiPo low-voltage cutoff. 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. Multiple water cooling inlets/outlets. High current 6V BEC. Firmware updatable through the Smart ESC Programming Box. High heat-resistant ICT connectors, backwards compatible with ECT connectors. Like every component in the SpektrumT Smart ecosystem, FirmaT 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. Smart technology is both simpler and superior! Spektrum Smart Technology LiPo Battery. What’s in the Box? (1) SpektrumT FirmaT Smart ESC. (1) Spektrum Smart sticker sheet. The all-weather, waterproof design of SpektrumT FirmaT 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. EC3T/EC5T BACKWARDS COMPATIBLE EC3T/EC5T BACKWARDS COMPATIBLE. FirmaT ESCs feature ICT 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 IC3T or IC5T connector-equipped SpektrumT 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. No need to connect multiple wires, sensors, modules, and links. With FirmaT 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. SMART TECHNOLOGY BATTERY DATA SMART TECHNOLOGY BATTERY DATA. When used with a SpektrumT Smart LiPo battery, your FirmaT 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 FirmaT 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 FirmaT ESCs’ 32-bit M4 processor produces higher resolution signal input and more accurate motor output. Button, Programming Box, Smartlink App, On Screen Text Gen. 3S – 8S LiPo. If you are not receiving answers to your E-mails, please check your SPAM folder to make sure they are not accidentally being delted by your spam filter. After 4 days have passed items will be released to other buyers. Most packages will arrive within 3-14 days. We like to keep our items available to buyers across the globe. This will help us keep our items available to international buyers. 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