Spektrum Firma 85A 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. Spektrum SMART FIRMA 85A BL Smart ESC/3300Kv Sensorless Mot Combo, SPMXSEMC01. Fast, powerful 32-bit ARM M4 […]