Congratulations! The US$90 TCD (wireless) works perfectly on Vado SL 4.0. There are some little things that you should be aware of:
- The TCD is totally independent of the bike. To turn it on, you need to press a button on the TCD. The display will remain on as long as the e-bike is on. It will go off soon after Vado SL is off. (It will keep your ride parameters, so you can continue monitoring your ride after the e-bike restart). You reset the TCD for a new ride by simultaneously depressing both buttons.
- The backlighting works only briefly after you pressed a button on the TCD. The TCD will remain not backlit on your night rides, which is the weakest point of that display.
- Depressing a button actually means pinching the bottom of the display (not the best design concept).
The good things are:
- You will get all ride parameters you might be interested with in five configurable screens
- TCD is equipped with a Garmin mount
- The thing is inexpensive (which is very important)
- The battery holds for at least a year.
The alternative way is using a bike GPS computer with so-called LEV ANT+ technology:
- Garmin Edge 530, 830, or 1030+
- Wahoo ELEMNT Bolt v2 or Roam (I truly recommend Bolt v2 even if I use the Roam).
All these bike GPS computers can connect to your Vado SL perfectly, using just a single E-Bike Sensor of these devices (we do not use the Cadence or Power Sensors; the E-Bike Sensor will do). You will get the same parameters as on the TCD but more nicely organized, and you will get the benefit of GPS navigation.
- Garmin Edge 530 is button operated, and the 830/1030+ are touch-screen
- Wahoo ELEMNT devices are operated by large solid buttons (good for gloves)
- The Specialized TCD mount is a Garmin mount. Wahoo requires a separate mount.
- These devices are insanely expensive.
I have standardized on Wahoo as I liked the device the most. I use Wahoo on both my big Vado 5.0 and Vado SL 4.0 EQ. I also own a TCD which I do not use.