Overview
The Traxxas Sensor, temperature and voltage (Long) TRX6521 is an essential telemetry accessory for serious RC enthusiasts who demand real-time performance monitoring of their vehicles. This innovative sensor plugs directly into your TQi receiver and power tap, providing live motor temperature and battery voltage data whilst you drive your RC car, truck, or crawler. Whether you're running a high-performance brushless RC buggy, an off-road 4WD monster truck, or a scale RC crawler, this temperature and voltage sensor gives you critical information to optimise your driving experience and protect your valuable equipment from damage caused by overheating or low battery conditions.
Real-time telemetry is the hallmark of modern RC racing and hobby driving in the UK. With the Traxxas TRX6521 sensor, you can monitor your motor temperature and battery voltage on your mobile device using the free Traxxas Link app, transforming your smartphone into a comprehensive performance dashboard. This is particularly valuable for competitive drivers, bashers pushing their vehicles to the limit, and anyone looking to extend the lifespan of their RC equipment through informed performance monitoring. The sensor is compatible with a wide range of Traxxas models, from the legendary TRX-4 rock crawlers to the extreme X-Maxx 4WD monster trucks.
The long version of this sensor is engineered to fit a variety of Traxxas vehicles with different chassis designs and layouts. It's the perfect upgrade for anyone who wants to take their RC hobby to the next level and move beyond guesswork about motor temperature and battery state during driving sessions.
Key Features
- Real-Time Temperature Monitoring — The sensor measures motor temperature and transmits this data directly to your TQi receiver, allowing you to monitor thermal performance as you drive and make adjustments to your driving style or cooling strategy in real time.
- Battery Voltage Monitoring — Track your battery voltage during operation to ensure you don't over-discharge your LiPo battery and risk permanent damage, extending the life of your expensive power packs.
- Wireless Telemetry Data — Requires a TQi radio equipped with the 6511 Traxxas Link Wireless Module to transmit sensor data wirelessly, eliminating the need for wired connections and keeping your vehicle layout clean and uncluttered.
- Free Traxxas Link App Integration — Download the free Traxxas Link application for your mobile device to view temperature and voltage data on your smartphone or tablet whilst driving, giving you instant access to critical performance metrics.
- Direct Receiver and Power Tap Connection — The sensor plugs directly into your TQi receiver and power tap connection, making installation straightforward with no complex modifications required to your existing setup.
- Long Cable Design — The extended cable length accommodates various Traxxas vehicle layouts, from compact 1/10 scale buggies to large 1/5 scale monsters, ensuring reliable installation across different chassis types.
- Essential Maintenance Tool — Protects your investment by providing early warning if your motor is running hot or your battery is discharging too quickly, helping you avoid catastrophic failures mid-race or mid-bash.
Technical Performance
The Traxxas Temperature and Voltage Sensor is built to integrate seamlessly with the TQi intelligent radio system, which is recognised as one of the most advanced RC radio systems available for UK hobbyists. The sensor requires a TQi transmitter paired with the optional 6511 Traxxas Link Wireless Module to function, and once installed, it provides continuous real-time telemetry feedback throughout your driving sessions. The long cable variant ensures compatibility with a comprehensive range of Traxxas models, including the full TRX-4 crawler range (featuring variants like the 1972 Chevrolet K5 Blazer, 1979 Chevy Blazer, Ford F-150 Ranger XLT, and Nissan Pathfinder), as well as high-performance brushless monsters like the X-Maxx, XRT, and UDR unlimited desert racer. The sensor also works with specialty models including the Ford Fiesta ST Rally, DCM M41 Catamaran, and other TQi-equipped platforms. The engineering allows for precise temperature measurement of your motor and accurate voltage reading of your battery pack, critical information whether you're running 2S, 3S, 4S or 8S LiPo batteries. This telemetry data is transmitted wirelessly to your TQi radio and displayed via the Traxxas Link app, making it invaluable for competitive drivers seeking to optimise motor cooling, manage battery capacity during races, and maintain equipment reliability in the demanding conditions of UK RC tracks and off-road bash sites.
What's in the Box
- Traxxas Temperature and Voltage Sensor (Long) TRX6521
What You Need to Complete
- TQi radio transmitter (required for operation)
- Traxxas Link Wireless Module 6511 (required for telemetry functionality)
- Compatible Traxxas vehicle with TQi receiver
- Smartphone or tablet with Traxxas Link app installed
Frequently Asked Questions
- Is the Traxxas TRX6521 temperature and voltage sensor compatible with my RC car? — The sensor is compatible with a wide range of Traxxas vehicles equipped with TQi receivers and power taps. Compatibility includes all TRX-4 variants (K5 Blazer, Chevy Blazer, Ford F-150, Nissan Pathfinder, TRX-4 Defender, and TRX-4 unassembled chassis), X-Maxx models (both standard VXL and Ultimate variants), XRT VXL-8S models, UDR unlimited desert racers, Ford Fiesta ST Rally cars, and DCM M41 catamarans. Check your vehicle's receiver connector type to confirm compatibility before purchase.
- Do I need a special radio to use this temperature and voltage sensor? — Yes, you need a TQi radio transmitter to use this sensor. Additionally, to access real-time telemetry on your mobile device, you must install the optional Traxxas Link Wireless Module 6511 in your TQi receiver. Without this module, the sensor will not transmit data wirelessly to the Traxxas Link app.
- What is the Traxxas Link app and how do I use it? — The Traxxas Link app is a free mobile application available for smartphones and tablets that displays real-time telemetry data from your sensor, including motor temperature and battery voltage. After installing the app on your device, pair it with your TQi radio (equipped with the 6511 Wireless Module) to view live performance data whilst you drive, giving you instant feedback on your vehicle's operating conditions.
- Why would I want a temperature and voltage sensor for my RC vehicle? — Temperature monitoring helps you identify motor overheating issues before they cause damage, allowing you to adjust your driving style or add cooling solutions. Voltage monitoring ensures you never over-discharge your LiPo battery, which can permanently damage expensive battery packs. Real-time data helps you understand your vehicle's performance characteristics, optimise your setup, and protect your investment through informed decision-making.
- What is the difference between the long and short versions of this sensor? — The long cable version (TRX6521) is designed to accommodate various Traxxas vehicle layouts with different receiver and power tap mounting locations, providing greater flexibility across multiple models. The long cable length ensures installation compatibility across the widest possible range of Traxxas platforms.
- Can I use this sensor without the Traxxas Link app? — The sensor requires the TQi receiver and Traxxas Link Wireless Module 6511 to transmit telemetry data to your mobile device via the Traxxas Link app. Without this setup, you will not be able to view the temperature and voltage data in real time during driving.
Why Buy from RC Model Shop?
RC Model Shop is a trusted UK RC retailer and authorised dealer for all the brands we stock, including Traxxas, ARRMA, Losi, FTX, Hobbywing, Spektrum and more. Based in Walsall, we have a physical store where customers are welcome to come in, view products and purchase in store. Whether you are a seasoned competitor, a weekend basher, or just discovering the world of RC for the first time, our team of experienced RC enthusiasts is here to help you find the perfect setup and provide ongoing support. Order the Traxxas Sensor, temperature and voltage (Long) TRX6521 today with confidence, knowing you are buying from an authorised retailer with genuine products, expert knowledge and a commitment to customer satisfaction. Shop online or visit us in Walsall — we look forward to helping you get the most out of your RC experience.
- Manufacturer: Traxxas
- Model Number: TRX6521
- Product Type: Temperature and Voltage Sensor (Long)
- EAN: 0020334652102
- Cable Length: Long
- Connection: Plugs directly into TQi receiver and power tap
- Telemetry Data: Real-time motor temperature and battery voltage
- Required Radio System: TQi radio transmitter
- Required Wireless Module: Traxxas Link Wireless Module 6511
- App Platform: Traxxas Link (free mobile app for smartphone and tablet)
- Compatible Vehicle Types: TRX-4 rock crawlers, X-Maxx monster trucks, XRT buggies, UDR desert racers, Ford Fiesta ST Rally cars, DCM M41 catamarans, and other TQi-equipped Traxxas models
- Specific Compatible Models: TRX74276-4-GRN, TRX74154-4-RED, TRX57046-4-REDR, TRX57046-4-GRNR, TRX92086-4-RED, TRX92046-4-BLK, TRX82276-4-RED, TRX110056-4-SLVR, TRX92056-4-BLK, TRX92056-4-COPR, TRX92046-4-BLUE, TRX92086-4-BLUE, TRX82276-4-BLK, TRX82216-4-R6, TRX110056-4-RED, TRX92056-4-RED, TRX92056-4-BLUE, TRX92046-4-BRWN, TRX82256-4-GRN, TRX82256-4-SAND, TRX82256-4-RED, TRX82256-4-SLVR, TRX85086-4-RGD1, TRX85086-4-FOX1, TRX77096-4-RED, TRX77096-4-GRN, TRX77097-4-GRNX, TRX77096-4-ORNG, TRX77096-4-BLUE, TRX77097-4-BLUEX, TRX77036-4-WB, TRX78086-4-BLUE, TRX78086-4-ORNG, TRX78097-4-GRNX, TRX78086-4-GRN, TRX78086-4-BLK, TRX78097-4-BLUEX
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- For orders above £120, we offer delivery to most mainland UK addresses. For orders under £120, we can still deliver to Northern Ireland and the outlying isles, as long as the item can be sent by Royal Mail, weighs less than 30kg, and fits within 61cm × 46cm × 46cm. Some highland and remote areas may carry an extra delivery charge as couriers often apply surcharges in these locations. If you live in one of these areas, feel free to contact us before ordering so we can confirm the delivery options and costs for you.
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