Now i tested this device! and it is really a good device, no delay, strong reach, easy flashing, marvelest web installs and i used it with Zigbee2mqtt and iam fully content with it. You can place it anywere, use it how you want and works always, esspecialy the new ESP32 software from KoenK is marvelest! (https://www.aliexpress.com/item/1005004942648430.html)