The sound or alarm on the echo device is pretty simple, just make a routine like this:
Why do you want it to alarm on your phone? Is the Wyze notifications not suitable?
That may be using a program like Macrodroid on your phone, which takes events on your phone (lots of triggers, geo fence, notification, network connection, button press, etc) as triggers then does whatever you then program the action to do
Notifications off means that push notifications won’t be sent to your phone, but the event still happens, is recorded in the cloud, and is sent to any third party service you have linked.
This is the way it was designed, if you want to help and support a possible change, I’d suggest commenting your use case and voting on this Wishlist which requests the ability to turn on and off the sensor itself (it’s events), not just toggle the notification settings.
The keypad is for controlling the home monitoring service.
I would say that the only way to disable the entry sensor or stop it’s events is to take another magnet and put it by the sensor body so that it thinks its always closed. You could also just use rules in the Wyze app to control the notification settings based on time of day. And if you make an Alexa routine. Add a time frame where the sound to the echo will and won’t happen.