RadioMaster TX12MKII Quick Start Guide

Introduction

Thank you for purchasing the RadioMaster TX12MKII 2.4g remote control system. This system is versatile and can be used by beginners and professionals. Please read this manual carefully before use to ensure correct and safe operation. Due to constant improvements in software and hardware, this manual may change over time. Information in this manual is subject to change without notice. Visit our website for the most up-to-date information.

The TX12MKII 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 TX12MKII uses a powerful operating system called EdgeTX. 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, ensure the model's power is disconnected and the propellers are removed.

Do not operate the TX12MKII 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 TX12MKII is pre-installed with factory-approved EdgeTX firmware. To download the latest software manual, please visit the RadioMaster website: https://www.radiomasterrc.com

To download the latest firmware for your TX12MKII remote control, please visit the EdgeTX website: https://www.Edge-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 TX12MKII 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 TX12MKII features a built-in USB-C charging function for 3.7v to 4.2v lithium batteries. The charging circuit is 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 (CC2500 Version)

The TX12MKII comes with a CC2500 single-chip multi-protocol internal RF module, 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.

To enter model settings, long-press the MDL button, select MULTI in the SETUP page, and then select the protocol to be used in the sub-options. The system will automatically turn on the corresponding RF module according to the selected RF protocol, and turn off the other three RF modules. The system will only turn on one RF module at a time to ensure no extra radio signals interfere with each other.

• 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.

Model Selection and Protocol Selection (ELRS Version)

TX12MKII ELRS units are equipped with an internal ELRS module, capable of providing 10mW-250mW RF output. In non-extreme circumstances, 100mW output at 250Hz update rate is recommended, as higher RF output and update rates may significantly reduce battery life and generate excessive heat. Please adjust the power and rate reasonably according to your needs to balance performance and power consumption.

Bind Instructions:

1. Turn off the transmitter.
2. Cycle power to the receiver 3 times; the receiver LED will flash twice, indicating bind mode.
3. Turn on the transmitter, long-press the SYS button, and choose the ExpressLRS LUA under the TOOLS menu. Scroll down to [Bind] and press enter.
4. The LED on the receiver should now be solid, indicating successful bind.

Notes

EdgeTX 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.Edge-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) / SX1280 (ELRS)
• Supported Protocols: Corona, Hitec, Futaba S-FHSS, Frsky D16/D8, RadioLink, Graupner HoTT* (CC2500) / ExpressLRS (ELRS version)
• Transmitting Power: 20dBm
• Antenna Gain: 2db
• Voltage Range: 6.6-8.4v DC
• Range: > 2km @ 20dbm (depending on receiver)
• Radio Firmware: EdgeTX (Transmitter) / Multi-Module (RF module) / ELRS
• Channels: Up to 16 (depending on receiver)
• Display: 128*64 Monochrome LCD display
• Gimbal: High precision Hall gimbals
• External module: JR/FrSKY/Crossfire compatible
• Upgrade Method: USB/SD card & EdgeTX 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 TX12MKII. You may also visit our warranty support page https://www.radiomasterrc.com/contact

Firmware Update and EdgeTX

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

EU Simple Declaration of Conformity

RadioMaster declares that the radio equipment TX12 is in compliance with EU directives Directive 2014/53/EU. The full text of the declaration of conformity is available at the following website: www.radiomasterrc.com

Manufacturer: Shenzhen RadioMaster Co., Ltd

4th Floor, Yangtian Building, No. 18 Yangtian Road, Xinʼan Street, Baoan District, Shenzhen, Guangdong.

European agent: eVatmaster Consulting GmbH

Add: Bettinastr. 30, 60325 Frankfurt am Main, Germany

Zip Code: 60325

E-mail: contact@evatmaster.com

Tel: +496995179070

FCC ID: 2AV3G-TX12

FCC Information

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. The 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 the RadioMaster transmitter, ensure that your body (excluding fingers, hands, wrists, ankles, and feet) is kept at least 20cm away from the antenna to comply with the RF exposure safety requirements determined by FCC regulations.

FCC Warning

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.

Any changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment.

Note: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:

• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and receiver.
• Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
• Consult the dealer or an experienced radio/TV technician for help.

The device has been evaluated to meet general RF exposure requirement. The device can be used in portable exposure condition without restriction.

Specific Absorption Rate (SAR) information:

This TX12MKII ELRS meets the government's requirements for exposure to radio waves. The guidelines are based on standards that were developed by independent scientific organizations through periodic and thorough evaluation of scientific studies. The standards include a substantial safety margin designed to assure the safety of all persons regardless of age or health. The exposure standard for wireless radio employs a unit of measurement known as the Specific Absorption Rate, or SAR, the SAR limit set 1.6W/kg.

Body-worn operation: this device was tested for typical body-worn operations with the back of the handset kept 0mm for body worn. To maintain compliance with RF exposure requirements, use accessories that maintain a 0mm for body worn. The use of belt clips, holsters and similar accessories should not contain metallic components in its assembly. The use of accessories that do not satisfy these requirements may not comply with RF exposure requirements, and should be avoided.

The highest reported SAR value for worn on the body is 1.190 W/kg.