Yes. SwitchBot Hub Plus can work with Alexa for the paired infrared appliances.
SwitchBot Hub does work Alexa, but it helps other Bluetooth based devices (like the Bot, the Meter, etc.) connect to the Internet and enable the Alexa capabilities.
Please check more on https://www.switch-bot.com/works-with.
For instructions about how to set up Switchbot Hub Plus with Alexa, read more here.