Firma 120A Brushless Smart Marin (SPMXME1120)

The Firma 120A Smart Marine Brushless ESC is a high‑current electronic speed controller designed for demanding RC boats and watercraft. It brings together precise motor control with one‑wire telemetry, streaming RPM, voltage, temperature and battery status in real time to a compatible transmitter for real‑time monitoring and tuning.

Built for up to 6S LiPo and engineered for tough marine environments, this waterproof unit features an aluminum heat sink and multiple water‑cooling inlets and outlets to keep temperatures in check. It’s ready to install with no soldering required, housed in a rugged case with mounting tabs and IC connectors, and supports flexible programming options—button programming, the Smart ESC Programming Box, or the Smart Link USB app. Safety protections such as over‑current, thermal, low‑voltage cutoff and failsafe help guard the system, while a fast 32‑bit ARM M4 processor delivers precise, responsive ESC performance.