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

Specification ER3C-i (Included with ExpressLRS version)Item: ER3C-i 2.4GHz ELRS PWM ReceiverPower supply: DC 4.5 - 8.4VAntenna type: Built-in high-sensitivity ceramic antennaWireless protocol: ExpressLRS 3.3.0 pre-installedOutput channel: 3CH PWMTelemetry power: 10mWBattery voltage detection range: DC 4.0 - 35VWeight: 4.2 gramsDimensions: 26.1*18.5*13.0 mmFirmware: Device Category: Radiomaster 2.4Ghz / Device: RadioMaster ER3C-iPackage Includes1 * MT12 Surface Radio ExpressLRS Version1 * ER3C-i 2.4GHz ELRS PWM Receiver1 * Dual Switch Expansion module1 * 4 Way Joystick Expansion module1 * Nano Adapter，1 * USB-C Cable1 * Leather Lanyard1 * Custom RadioMaster signature carry case1 * 18650 Battery Tray,1 * Screen Protector1 * Stickers1 * Manual

• 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 RadioMaster’s 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, 4.0–35V battery detection) for reliable, low-latency RC car/boat control (4.2g, 26.1x18.5x13mm)