Derny › Treadmills › Horizon treadmills
Horizon 7.4AT · 7.8AT · T202
Derny is developed on a Horizon 7.0AT. Horizon builds the same Bluetooth standard, FTMS, into the 7.4AT, 7.8AT and T202, so Derny should set their belt speed from your heart rate the same way. We haven’t run each of these models ourselves yet.
At a glance
How sure are we?
Horizon says its 7.0AT, 7.4AT, 7.8AT and T202 all connect to apps through Bluetooth FTMS, the open fitness machine standard Derny uses. Derny sets the speed on the 7.0AT every day in development, and it talks to every FTMS treadmill the same way, so we expect the other three to behave like it.
Expecting isn’t the same as testing, so Derny doesn’t assume. When it connects, it checks whether the treadmill accepts speed commands from an app, and picks one of the two ways below.
Two ways Derny can run it
Derny changes the belt speed from your heart rate, never faster than the max auto speed you choose. Change the speed on the console any time and Derny carries on from there.
Derny shows you the speed to run, for example “GO TO 6.0 mph”, and you press the console buttons. Your heart rate still decides what Derny asks for.
Getting started
Workouts
Hold one steady, easy heart rate, such as your zone 2, for the whole run. The speed comes down as you tire so you can keep holding it.
A warm-up, then three long hard blocks. Each block’s speed is based on how your heart responded to the one before.
Just run and record, or build your own workout with speed targets and heart-rate rules.
Staying in control
Ending the workout doesn’t stop the belt. Pause or End in Derny stops it changing the speed. To stop running, use Stop on the console or the safety key.
Questions people ask
It should. Horizon lists the 7.4AT as a Bluetooth FTMS treadmill, the same standard as the 7.0AT Derny is developed on. We haven’t tested a 7.4AT ourselves yet.
It should. Horizon lists the 7.8AT as a Bluetooth FTMS treadmill, so Derny should set its belt speed the same way it does on the 7.0AT. We haven’t tested a 7.8AT ourselves yet.
It should. Horizon lists the T202 as a Bluetooth FTMS treadmill. If it doesn’t accept speed commands, Derny shows you the speed to run and you set it on the console.
On the 7.0AT, yes: Derny sets the belt speed from your heart rate and never goes faster than the max auto speed you choose. On the 7.4AT, 7.8AT and T202 it should work the same way.
Press Stop on the console or pull the safety key. Pausing or ending the workout in Derny stops it changing the speed, but doesn’t stop the belt.
Usually not. Most treadmills connect to one app at a time, so close the other app before you connect Derny.
Yes. Connect Strava once and every finished run or walk uploads on its own. Derny also saves it to Apple Health on iPhone or Health Connect on Android.
Own one?
We haven’t run this treadmill ourselves yet, and we want Derny to work on as many treadmills as possible. If you own one, get in touch, whether it works perfectly, only shows you the speed, or doesn’t connect at all. Email the make and model to [email protected] and we’ll work with you to get it working. On a 7.0AT? See the Horizon 7.0AT page.