As part of our wireless doorbell reviews, we took a look at the Homasy mini wireless doorbell. It was clear from the outset that the design plan was to make it as small as possible, and boy did they hit that target!
If you are looking for a doorbell that works with Alexa, then we have some excellent options right here for you. All are Alexa certified by Amazon.
Some options on the page are not wireless doorbells, so please check before you buy!