Traxxas' TQi 2.4GHz 2-Channel Radio System boasts a full range of tuning features; long-range, 2-channel versatility, high-output, 2.4GHz signal, and proven Traxxas reliability for rock-solid performance. However, the most important and innovative feature may already be in your pocket. TQi can be equipped with the revolutionary Traxxas Link Wireless Module (not included) that turns your Android or Apple iOS device (not included) into a powerful tuning tool for your Traxxas model. The full-color display combines with the Traxxas Link™ App to deliver an intuitive, high-definition, full-color graphical user interface that unlocks the mysteries of optimizing your radio system for ultimate vehicle control. The Traxxas Link Wireless Module is compatible with Android 4.4+ or Apple iOS 4.3+ platforms (see requirements below). 

TSM - Traxxas Stability Management 
Traxxas Stability Management (TSM) allows you to experience all the extreme power, speed, and acceleration that was engineered into your Traxxas model making it much easier to control on common slippery surfaces such as dusty asphalt, smooth concrete, and even ice and snow. Punch it off the line and TSM goes to work sensing the vehicle’s direction and making steering corrections to provide straight-ahead full-throttle acceleration without fishtailing, spinouts, and loss of control. TSM also works during cornering, first making intuitive corrections to maintain your line, and then allowing you to hammer the throttle earlier in the turn for much faster exit speeds. Braking is dramatically improved as TSM works to keep you arrow straight until you come to a complete stop. 

Unlock the Full Potential of the TQi with the Traxxas Link App 
Gone are the clunky controls and blocky monochrome graphics of yesterday's radio systems. This powerful app gives you complete control over the operation and tuning of your Traxxas radio controlled model with stunning visuals and absolute precision. Install accessory Traxxas Link telemetry sensors on the model, and Traxxas Link displays real-time data such as speed, RPM, temperature, and battery voltage with brilliant graphics. Traxxas builds the world's fastest Ready-To-Race® radio-controlled models. That level of performance demands precision control. Traxxas Link App gives you the tools for exacting adjustment and superior control while always keeping you informed on your model's status and speed. 

Features: 

• Sleek 2-Channel Transmitter Design with Internal Antenna
• 5-Channel Receiver with 3 Telemetry Ports
• Traxxas Link Model Memory for up to 30 Models
• Simple 2-Button Programming Interface
• Built in Failsafe
• Direct Sequence Spread Spectrum Technology (DSSS)
• Uses only 4 AA Batteries
• Traxxas Link Application Provides Visual Access to:
• Real-Time Telemetry
• Customizable Dashboards
• Steering/throttle expo
• Steering/braking dual rate
• Servo reversing
• Endpoint adjustment
• Profile customization and sharing
• Manage an unlimited number of models with the Traxxas Link App

Device Requirements 
Traxxas Link is designed for use with Android 4.4 and up or iOS 4.3 and later. Traxxas Link is compatible with Android equipped devices, iPhone (4S, 5, 5C, 5S), iPod touch (5th generation and later versions), iPad (3rd generation and later versions), or iPad mini. For full functionality, Traxxas Link requires a Traxxas TQi transmitter with Traxxas Link Wireless Module and a TQi receiver installed in the model. Telemetry functions require Traxxas telemetry sensors to be installed on your model.