I have one of these inflator kits. I have not used it as I'm just trying to figure out the "Repair" mode.
If the orange dial is turned to "Repair", does it inject a substance into the tire? If so where is the canister to swap out?

 

See the thing this arrow points at? Pull it out and READ IT FFS

 

 

That is stuck on the plastic wrapper and when I flip it over there was nothing printed on the other side.
For FS I will check again when I get home.

 

Instructions on using the unit can be found at Tire repair kit or at Repair kit. There are also some videos online. What's in the actual unit can be seen in the pictures at Pump & sealant kit

As far as the sealant, there is a Honda sealant refill at Honda/Acura Genuine OEM Tire Repair Kit Sealant Refill. A bit pricy at $89. The sealant is internal in the unit and I believe in Europe, where this kit is common, they recommend the sealant be replaced every 5 years. A quick search seems to indicate some 3rd party alternatives at significantly lower prices.

 

Internals.