IoT/Smart Device startups (I will not promote)

Is launching an IOT or smart device start up any more challenging than a normal SaaS? I was curious to learn about the steps required to launch a product with hardware look like. Are there any permits or certifications needed prior to launching? I was also just very curious about boots strapped IOT or a smart device startup - how does testing and research happen within the scopes of a boot strapped start up, cause I would imagine testing hardware would require a lot more resources. In terms of action items after launching, are there other things that are different than launching a normal size such as monitoring, site viewers, and customer service. The question arises from the doubt of having to manage delivery, shipment, inventory, etc.. For some context, I am hardware person and I have an idea that I am undergoing validation for but I have been slightly demotivated given the concerns above. Any personal experiences or advice would be greatly appreciated. Thank you (I will not promote)