Spektrum RC Firma 45 Smart Lite Sensorless Brushless ESC (2S)

ESC Overview:

Unleash next-level control with the Spektrum Firma 45 Smart Lite ESC, a compact, waterproof powerhouse that delivers real-time telemetry, smooth brushless performance, and Smart technology simplicity, all in one package.

About the Firma 45 Smart Lite Brushless ESC

Smart, Compact Power

The Spektrum Firma 45 Smart Lite Brushless ESC delivers smooth, reliable performance in a compact and waterproof design. Powered by a fast 32-bit ARM M4 processor, it ensures precise throttle control and explosive acceleration, making it ideal for Losi 22S Sprint cars and similar 2S LiPo setups. Its rugged plastic case, aluminum heat sink, and high heat-resistant IC™ connectors ensure durability and efficient cooling, even in the harshest off-road conditions.

Telemetry Made Easy

With Spektrum Smart Technology, this ESC provides real-time telemetry to your transmitter via a simple one-wire connection, no extra modules or sensors needed. You’ll get instant access to vital data like battery voltage, ESC temperature, and throttle input. It also features multiple programming options, adjustable BEC, and multi-point protection, offering advanced tuning and peace of mind in every race.

Features:

• Sends real-time telemetry to your transmitter
• Fully waterproof for all-weather driving
• Simple programming with button, box, or USB
• No soldering needed, plug and play
• Built-in protections for heat, current, and voltage
• High-power adjustable BEC (6V or 7.4V at 4A)
• Compact design fits most vehicles easily
• Fast 32-bit processor for smooth, powerful control
• Overload & low-voltage cutoff protection

Includes:

• (1) Spektrum™ Firma™ Smart ESC
• (1) Decal Sheet
• (1) Manual

Specifications:

This product is expected to become available for purchase on Thursday, December 11, 2025

• Losi 22S Sprint