I bought a couple as the main value for me is that it&#x27;s tied directly to AWS Lambda. Yes, I could build an ESP8266, RaspberryPi, or Arduino-based solution, but then it&#x27;s totally custom. Because my startup is involved in &quot;serverless&quot; computing, it&#x27;s beneficial for me to say that this button directly calls an AWS Lambda function out of the box.<p>I&#x27;ll replace the battery with a DC transformer and use one for demos.