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Towing? There's an app for that. This brake controller connects to your phone with Bluetooth so all your settings are right in your hand. The unit plugs into your 7-way for a one-step installation with no wiring.
Features:
Specs:
Pair with other OneControl systems for convenient control of your trailer in one app!
Quick Tip: The Bluetooth PIN for initially pairing to your smart device is located in the quick reference guide!
Note: If Bluetooth connection is lost, the brake controller will continue to function safely, using the most recently programmed settings. This brake controller is not compatible, but will not interfere, with Apple CarPlay or Android Auto.
The Curt Echo is unique for its plug-and-play installation. With no wiring or permanent installation, setting up the Echo is a breeze.
The main unit plugs into the 7-way at the rear of your vehicle and then the 7-way trailer connector plugs into it. Use the included strap, found inside the cap, to secure the Echo in place. It will help ensure a constant connection between vehicle and trailer.
That done, download the OneControl app on your Apple or Android smartphone and wirelessly pair the unit to your phone via Bluetooth, following the in-app instructions. It should take about 5 seconds for them to pair. Once paired, the LED light on the unit will turn a solid blue. Plug in your trailer's 7-way and let the whole system calibrate for another 5 seconds. When the LED turns green, configure your desired trailer brake settings in the app and save it as a profile. Then you're ready to tow!
Note: If you don't already have a 7-way plug at the back of your vehicle, check out our exclusive 7-way upgrade kit for brake controller installation (ETBC7L - sold separately).
Besides the crazy-easy installation, the Echo is unique for giving you control of your towing through your smartphone. You can set the maximum braking output, adjust the braking sensitivity, apply the manual override - all from the OneControl app.
Completely wireless, the Echo connects to the app via Bluetooth. You can save multiple towing profiles in the app, a big plus if you have a fleet and want to be able to just select a pre-set configuration and get towing. And don't worry; after you've downloaded the app, you don't need to have data on to use the app with the brake controller. You'll be able to receive calls and texts and access your other apps.
OneControl App
Simple, intuitive, and user-friendly, the OneControl App makes it wicked easy to manage your settings and control your trailer.
1. Manual Override
This big orange button in the middle of the app is your manual override. Press and hold the button, and the brake controller will smoothly apply the trailer brakes without applying your vehicle's brakes. This is perfect for stopping sway or controlling your trailer's momentum in an emergency.
Quick tip: Put manual override right at your fingertips by adding this button (C83HR - sold separately) to your dash. The app must be running for the button to work, but it can be in the background while you use other apps on your phone. The button has an adhesive back and runs on a replaceable battery.
2. Brake Output Indicator
The outer ring gives you a visual indicator of how much power is being applied to the trailer brakes. This is determined by your max output setting.
3. Max Output
Braking output is the maximum amount of power that will be applied to your trailer's brakes. How much braking output you need is determined by the weight of your trailer; a heavier trailer will need more power to bring it to a stop.
To set your maximum braking output, tap this button and increase or decrease using the + and - buttons. You want to set the braking output as high as you can without locking up the brakes.
4. Sensitivity Level
This controls the aggressiveness of your trailer's braking, meaning how quickly the brakes reach the max output level. This is a great adjustment to make when you're towing a heavy load and the trailer will need more umph to bring it to a stop so it doesn't push your vehicle forward.
Just like max output, if you need to change your sensitivity level, use the + and - buttons. If your vehicle takes too long to come to a stop, increase the setting. If it stops too abruptly, lower the setting. You may also need to adjust the sensitivity based on your own preferences, or when the trailer load or road conditions change.
5. Vehicle Hazard Lights
If you turn on your vehicle's hazard lights, there's a chance the trailer brakes will pulse on and off as the lights flash. Turn this setting on any time you activate your hazard lights to prevent this problem.
Save Multiple Trailer Profiles
Get on the road faster by saving your settings. With the app, you can add and store multiple profiles for both trailers and vehicles so that your preferred settings will be ready to go as soon as you hook up. This is perfect if you own a fleet and don't want to have to reset the controller every time you swap out trucks, trailers, or drivers. You'll have the ideal settings saved and waiting for you. To switch between profiles, just swipe left or right.
If you like the idea of monitoring your trailer from your phone, the other OneControl systems could be a great fit for you.
The Curt True Course (C94VV - sold separately) is an advanced Bluetooth sway control system that automatically triggers the trailer brakes (independent of the vehicle's brakes and the brake controller) when it detects dangerous trailer movement. The Curt Tire Linc (C54VV - sold separately) Bluetooth TPMS monitors the temperature and pressure of your trailer tires. All of these systems use the OneControl app so you can manage all of them in the same place on your phone.
The LED indicator light on the top of the plug-in module will show you when the brake controller is connected. You can also check the LED for simple diagnostics when you need to troubleshoot.
Because the Echo mounts outside the vehicle, it's designed for maximum weather resistance. The unit is filled with an epoxy resin that seals off the internal components from moisture and the elements. The Echo also has a soft locking tab for connecting to your 7-way plug that reduces vibration and helps ensure a constant connection.
Proportional braking means that your trailer brakes mimic your tow vehicle's brakes. If you slam on the brakes in your vehicle, your trailer brakes hard; if you brake lightly, your trailer brakes lightly too. The trailer's braking is in proportion to your vehicle's braking. This saves wear and tear on the tires and the brakes on both your vehicle and trailer.
The Echo uses an internal 3-axis accelerometer to sense how your vehicle is braking so it can send the right amount of braking power to your trailer. It measures the inertia of your tow vehicle and activates the trailer's brakes to ensure that your trailer slows at the same rate. The result is uniform braking across your towing setup. No push-pull action - just smooth, proportional braking every time.
Customer Satisfaction Score:
94% were satisfied with this product
6% of customers were not satisfied
Ratings & Reviews
Was easy to install and program. I have not used brake controller yet
It works great; just don't forget to hook it up before pulling out with your camper!
Product works completely as described. Easy to add a controller to ANY vehicle that has a 7 point trailer plug like my 2018 Chevy Silverado (no factory brake controller but has a prewired 7 and 4 point trailer plug) or my 2014 Jeep Grand Cherokee. Trailer is a 2 axle CargoMate. App was a bit hard to find on the AppStore (iphone). Search "Echo" not Curt then it comes up. Set up is quick and easy to modify if necessary with load changes. App does not need to be normally running if you don't need to apply brakes manually. But if you do need to apply brakes, the response is surprisingly fast through the Bluetooth communication. No delay whatsoever. It doesn't interfere with other apps running either. I like to use navigation and stream music from my iphone 8. Only real issue I have with the product is that its not lockable. Very easy for someone who knows what they are looking for to just unplug and run. I parked overnight at a hotel and didn't realize it until the next day. Got lucky that it didn't get stolen, but now I'm aware and take it off when done towing.
This brake controller is so easy to use and seems to be working as advertised.
Was easy to set up and worked amazing!! Even better than the wired brake controller in my old truck. I definitely recommend this set up if you don't have a factory or aftermarket wired trailer brake system.
Have used it not sure if it work
Load app on my phone and paired phone brake controller
The trailer that I will be using is a rental it it doesn’t work I will be not be able to use the trailer, will be embarrassed, and have wasted $[XX].
Had no problems with the install and pairing. I tested the emergency brake leaving the driveway and it worked as intended. The profile are great and worked with no issues. This is definitely the way to go.
The unit works well and is very responsive to the app. We have not had any disruption in connection while towing. The only reason I didn’t give it 5 stars is that the connection to the hitch is not very secure and gaps allow water to get in. I strongly recommend this unit.
Easy to pair and adjust sensitivity and braking power. It works great for my light trailer application. The retainer strap is worthless, but better replacements are cheap and easy to find. The primary point is that it is simple to use and works like it is supposed to.
Easy to setup Haven’t pulled my trailer yet.
Arvin
6/24/2026
Never used it. Trying to sell it but nobody wants it.
So far working well. Easy to pair with my phone. Easy to change the settings. The listed price at etrailer is significantly better than the RV dealer. etrailer is a great company. I purchased from them in the past and was never disappointed. I am a loyal customer.
I recently changed my tow vehicle, and the new one didn't come with a trailer brake controller. Finding the right device and a willing installer was daunting....then I came across eTrailer's YouTube discussion of their top recommendations. I was really impressed by the presenter's personal experience with the Curt Echo. I addressed my needs perfectly. It arrived prompty. App download and setup was a snap. Just back from my maiden voyage with this new tech. Worked perfectly! Thanks, eTrailer.
The 20 foot roll of 12 gauge wire is too short for a Dodge Grand Caravan application. I had to purchase a 25 foot piece at Home Depot to avoid a splice on the underside of my van. Otherwise the products, installation instructions and delivery were exceptional.
This wireless brake controller is a Great Product! Very easy to use and works perfectly. I've used it with one trailer but several different vehicles. Easy to switch over. Just plug and play!
I had one of these brake controllers before, but I lost it earlier this year--I didn't have the strap tied up properly. It was easy to operate, and worked well. So I'm replacing it with this new one.
This is a great product. I did need to contact e-trailer to help me connect it to bluetooth. Nothing wrong with the product, just my tech skills. They were great to work with.
I bought this to work with an F150, which didn’t have the trailer brake connection. It saved me over $550 in installation fee fees the dealer wanted. One of the better values at etrailer.
Had to purchase three (3) of the Curt Echo Wireless Brake Controllers for one (1) of them to work! Hours of frustration and failed connection to either the tow vehicle or via the App. Watched countless videos and followed the instructions meticulously. We finally used a good old volt tester to find out the first two were faulty.
Also, don't trust the rubber strap or the plastic clip on the lid to hold the controller in place. They have both failed us numerous times.
This is a great concept.But, Curt's execution and quality control are horrible on this product and App.
With 7-pin connections on both vehicles and camper already, this is a plug and play solution that easily switches between both vehicles without any wiring.
Install the app, pair the setup while connected to each vehicle and you're in!
You can adjust how much it responds when you brake but the setting as it came worked great for me. Gives real time indication on your phone when you brake, you see it sending signal to the trailer and proportional how much of a signal. Set tour phone up hands free mount and you're ready to tow!
I still do not like that you need to have Location Services for a Brake Controller.
Fix this.
The other thing I noticed is that it has a tendency to grab hard when pressing the brake, no matter what setting I have it on on the iPad I am using.
Other than that it's ok, but still gets only 1 star for the utter ridiculous need for Location Services to be on. I'm quite frankly tired of the invasive nature of most modern tech.
C
3/6/2026
Still the same issues a year on. The iPad App requires Location Services. Why is this necessary for a brake controller? Yes, I know the app does other things, but it does not need Location Services for the Brake Controller portion of the app. Additionally, it still grabs too hard when pressing the brake in the vehicle no matter what setting I have the app set to, its quite annoying. The brake curve for the controller is not designed well.
It works just fine but the trailer brakes hold just a second longer than the car.
Claire H.
6/26/2026
If the trailer brakes are holding a bit longer than the car brakes, it sounds like the sensitivity is a bit too high. I suggest using the app to reduce the sensitivity level and then testing it to see how the brakes react.
Its a great idea, but it seems like the sensitivity I need is between setting increments. Its also kind of a pain when your truck is equipped with car play because my phone constantly prioritizes the radio over the controller. I should make a point to say it does indeed work on the last setting you have which is a life saver. I haul vehicles (im sure this is user error) so when I unload I end up having to go remove the controller to shut down the brakes instead of spending time trying to get it to reconnect to turn off. With these small complaints in mind, id still choose this over hard wiring a unit into my truck
Excellent brake control unit. Easy wire free installation.
Highly recommend.
Louis
7/29/2026
After a year still working great
Christopher H.
7/29/2026
This wireless Brake controller works well with my Jayco single axel trailer. I did have a bit of trouble with the adjustable rubber strap that secures the unit to the 7-way outlet. The little nub that fits though one of the holes in the strap broke off after a dozen or so uses. I was able to replace it with a length of Velcro strapping that accomplishes the same. Other than that, the unit functions perfectly and it saved me having to bother with the hassle of installing an under-dash unit. I am happy with the product.
This unit did NOTwork with my 2024 Mazda CX90 SUV. Mazda service tech felt it MIGHT be due to rear sensors for passing cars, back-up, & related. He also advised that the dealer brake controller had poor reviews also. I installed a brake signal switch to brake pedal and wired in a conventional brake controller. Works great now. Would have been a LOT easier if the Curt unit worked.
Gwendolyn Y.
4/30/2026
That does sound frustrating, Chris. When the Echo is plugged in your vehicle could think that there is a trailer plugged in since the Echo would be pulling a little bit of power to turn on which can cause some issues for sensors because they are expecting a trailer to be there. How was the unit not working your your CX90?
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John
12/6/2019
Been a year and 1000s of miles of towing ... still working great!