In that case, there’s also a 16A version! (16A is 80% of 20A) It’s only rated for up to 1/2 HP motors. If your 120v power tool is over ~10A, you’d want to have the power pack trigger a motor-rated line-voltage contactor, and that contactor would turn the power on and off.

https://www.lutron.com/ExternalTechnicalDocumentLibrary/AL-1...