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Main image of HTLNUZD Radiomaster MT12 Surface Radio Controller Edgetx Open-Source System 2.4G ELRS ER3C-I LBT Technology Long-Range, Low-Latency Control for RC Cars & Boats

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HTLNUZD Radiomaster MT12 Surface Radio Controller Edgetx Open-Source System 2.4G ELRS ER3C-I LBT Technology Long-Range, Low-Latency Control for RC Cars & Boats

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Dual RF Module Options: Choose between Built-in ExpressLRS Backpack or 4in1 MPM RF modules for versatile RC control compatibility; Powerful Performance: Equipped with STM32F407VGT6 processor (1MB Flash) and preinstalled EdgeTX firmware for seamless, customizable control; Fast Charging & Extended Battery Life: Supports QC3.0 fast charging (2.0A MAX) with an oversized compartment for 2x18650 cells or 2S 7.4V 5000mAh battery pack (batteries not included); Ergonomic & Customizable Design: Compact, handheld form factor with RadioMasters standardized button layout, rotatable antenna, and included base switches/4-way joystick for personalized control; Included ER3C-i Receiver (ExpressLRS Version): 2.4GHz ELRS 3.3.0 protocol, 3CH PWM output, built-in ceramic antenna, and telemetry (10mW, 4.035V battery detection) for reliable, low-latency RC car/boat control (4.2g, 26.1x18.5x13mm)

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Specification ER3C-i (Included with ExpressLRS version)
Item: ER3C-i 2.4GH z ELRS PWM
Receiver Power supply: DC 4.5 - 8.4V
Antenna type: Built-in high-sensitivity ceramic antenna
Wireless protocol: ExpressLRS 3.3.
0 pre-installed Output channel: 3CH
PWM Telemetry power: 10mW
Battery voltage detection range: DC 4.0 - 35V
Weight: 4.2 grams
Dimensions: 26.1 * 18.5 * 13.0 mm
Firmware: Device
Category: Radiomaster 2.4G hz /
Device: RadioMaster ER3C-i Package Includes 1 * MT12 Surface Radio ExpressLRS Version 1 * ER3C-i 2.4GH z ELRS PWM Receiver 1 * Dual Switch Expansion module 1 * 4 Way Joystick Expansion module 1 * Nano Adapter 1 * USB-C Cable 1 * Leather Lanyard 1 * Custom RadioMaster signature carry case 1 * 18650 Battery Tray, 1 * Screen Protector 1 * Stickers 1 * Manual

Additional Information
First Listed on Newegg	August 30, 2026

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Item#: 9SIC72JM5P4060