speed and cadence sensor

I normally use my wattbike with zwift.  I have an ANT + dongle etc.  I want to put my tt bike on my very basic turbo trainer and wondered if I buy a garmin speed and cadence sensor (they are about £60) will this work?

 

Shouldn’t be an issue getting it up and running.

Just make sure you choose a supported trainer if you want accurate readings, and you should be set.

Hi I have the garmin speed and cadence sensor it appears you cannot select both and have to have a controllable trainer. instead of ‘other’ ? Do you have to have something that measures power?