RadioMaster TX12 Quick Start Guide

Introduction

Thank you for purchasing the RadioMaster TX12 2.4g remote control system. This system is versatile and can be used by beginners and professionals. To ensure the correct and safe use of this product, please read this manual carefully before use. Due to constant improvements in software and hardware, this manual may change over time. The information contained in this manual is subject to change without notice. Visit our website for the most up-to-date information.

The TX12 remote control is suitable for all types of fixed-wing aircraft, gliders, helicopters, cars, boats, robotics, multi-rotor aircraft, and anything else you might create. If you can build it, RadioMaster can control it. The TX12 uses a powerful operating system called OpenTX. For more information, visit the links below.

— The RadioMaster team.

Safety Information

Many remote-control models are equipped with powerful motors and sharp propellers. When using or maintaining models, proceed with caution. When performing assembly or maintenance, make sure to disconnect the power to the model and remove the propellers.

Do not operate the TX12 remote control system under the following conditions:

• In severe weather or strong windy conditions, such as rain, hail, snow, storms, or electromagnetic environments.
• In any situation where visibility is limited.
• In areas where people, property, high-voltage power lines, public roads, vehicles, or animals may be present.
• If you feel tired or unwell, or under the influence of drugs or alcohol.
• If the remote control or model seems to be damaged or not working properly.
• In areas with high 2.4GHz interference or where 2.4GHz radio is prohibited.
• When the radio's battery voltage is too low to be used.
• In areas where local regulations prohibit the use of aviation models.

Manual and Firmware Download

The TX12 is pre-installed with factory-approved OpenTX firmware. To download the latest software manual, please visit the RadioMaster website: https://www.radiomasterrc.com

To download the latest firmware for your TX12 remote control, please visit the OpenTX website: https://www.open-tx.org

Important! ⚠️

ANTENNA: Install the provided antenna in the top of the radio BEFORE installing batteries and turning on the radio. DO NOT operate the radio without the antenna installed and the internal RF module powered on. Doing so will damage the internal RF module and will not be covered under warranty.

FIRMWARE: The TX12 is pre-installed with the most stable firmware at the factory at the time of release. Please only attempt to update the firmware if you are confident in the process. Incorrect firmware updates may cause the remote control to become inoperable.

Remote Control Overview

The following diagram illustrates the components of the RadioMaster TX12:

Diagram showing the RadioMaster TX12 remote control. Key components labeled include: Antenna, Handle, TYPE-C USB port, Trainer Port, SE/SB/SA/S1 (3-position switch/button/slider), Left Gimbal, SYS Button, RTN Button, PAGE> Button, PAGE< Button, TELE Button, Right Gimbal, Power Button, MDL Button, Trim Buttons, Menu Wheel, LCD Screen, SF/SC/SD/S2 (3-position switch/button/slider).

Key Components:

• Antenna
• Handle
• TYPE-C USB Port
• Trainer Port
• SE 3 Position Switch
• SB 3 Position Switch
• SA Button
• S1 Slider Potentiometer
• Left Gimbal
• SYS Button
• RTN Button
• PAGE> Button (Next Page)
• PAGE< Button (Previous Page)
• TELE Button
• Right Gimbal
• Power Button
• MDL Button
• Trim Buttons
• Menu Wheel
• LCD Screen
• SF 3 Position Switch
• SC 3 Position Switch
• SD Button
• S2 Slider Potentiometer

Power and Charging Precautions

The TX12 has a built-in USB-C charging function for 3.7v to 4.2v lithium batteries. The charging circuit is only suitable for 2x 3.7v Li-ion 18650 or 2x 3.7v LiPo batteries (2s 7.4v Lipo battery pack). The nominal battery voltage is 3.7v, and the maximum charging voltage is 4.2v.

Do not use LiFE battery packs or 18650 lithium-ion batteries with a nominal voltage of 3.6v to 4.10v. Charging the incorrect type of battery may damage the charger or cause a fire.

Please check the voltage and condition of the battery regularly and never charge it unattended. Always charge in a safe area away from combustible materials. If the remote control gets wet or damaged in any way, do not charge it.

RadioMaster does not assume any responsibility for any adverse consequences caused by the use or misuse of this product.

Model Selection and Protocol Selection

The TX12 comes with a CC2500 single-chip multi-protocol internal RF module, which is compatible with several different protocols. To view the latest list of all compatible protocols, please visit https://www.multi-module.org/. Please note that new protocols will be constantly updated and added to the latest firmware. Some new protocols may require firmware upgrades.

The on-screen display (OSD) shows the following settings:

On-screen display showing SETUP menu with Mode: MULTI, Type: FrSky, Subtype: D16, Status: No telemetry, Ch. Range: CH1-16, Receiver: 00 [BND] [RNG], Low Power: [checkbox].

• Long press the MDL button to enter the model settings. Select MULTI in the SETUP page and select the protocol to be used in the sub-options. The system will automatically turn on the corresponding RF module according to the RF protocol you selected. The system will only turn on one RF module at a time to ensure no redundant radio signals interfere.
• Bind [BND] is used to start the binding process.
• Range [RNG] button can reduce the power to 1/30 to facilitate testing of remote-control distance.

Notes

OpenTX software is very powerful and has a large number of programming and mixing functions. Please download the comprehensive software installation guide from the link below for more detailed instructions:

https://www.open-tx.org or https://www.radiomasterrc.com

Specifications

• Size: 170*159*108mm
• Weight: 363g
• Frequency: 2.400GHz-2.480GHz
• RF Chip: Single-chip Multi-protocol (CC2500)
• Supported Protocols: Corona, Hitec, Futaba S-FHSS, Frsky D16/D8, RadioLink, Graupner HoTT*
• Transmitting Power: 20dbm
• Antenna Gain: 2db
• Working Current: 160mA@8.4V
• Voltage Range: 6.6-8.4v DC
• Range: > 2km @ 20dbm (depending on receiver)
• Radio Firmware: OpenTX (Transmitter) / Multi-Module (RF module)
• Channels: Up to 16 (depending on receiver)
• Display: 128*64 Monochrome LCD display
• Gimbal: High precision potentiometer gimbals
• External module: JR/FrSKY/Crossfire compatible
• Upgrade Method: USB/SD card & OpenTX Companion PC software

* For the most up-to-date list on supported protocols, please visit https://www.multi-module.org/

Warranty and Repair

If there is any problem with your remote control hardware, please keep the proof of purchase and contact the retailer where you purchased the TX12. You may also visit our warranty support page https://www.radiomasterrc.com/contact

Firmware Update and OpenTX

For the latest information and firmware updates from the OpenTX open source firmware development team, please visit the OpenTX website at https://www.open-tx.org.

Declarations and Compliance

EU Simple Declaration of Conformity

RadioMaster declares the radio equipment TX16s is in compliance with EU directives Directive 2014/53/EU. Full text of the declaration of conformity is available at the following website www.radiomasterrc.com

Manufacturer

ShenZhen RadioMaster Co., Ltd
5th Floor, Yutian Building, No. 18 Yangtian Road, Xin'an Street, Baoan District, Shenzhen, Guangdong.

FCC Information

FCC ID: 2AV3G-TX12

This equipment has been tested and found to comply with the limits for Part 15 of the FCC rules. This device complies with Part 15 of the FCC rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. Full text of the declaration of conformity is available at the following website www.radiomasterrc.com

CAUTION ❗

Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment. This product contains a radio transmitter with wireless technology which has been tested and found to be compliant with the applicable regulations governing a radio transmitter in the 2.400GHz to 2.4835GHz frequency range.

Antenna Separation Distance

When operating your RadioMaster transmitter, please be sure to maintain a separation distance of at least 20 cm between your body (excluding fingers, hands, wrists, ankles, and feet) and the antenna to meet RF exposure safety requirements as determined by FCC regulations.