We are a startup company developing a product in the Health Care $ Wellness area. In its core our product will be a software system which will collect informaiton from different IoT devices.
For that purpose, we are looking for a reliable Zigbee and WiFi Gateway, which should have the ability to communicate with an MQTT Broker. Ideally the Gateway should be flashed with Tasmota firmware or with a firmware developed by you but it should not communicate with external services or clouds.
The product should be CE certified as the intention is to be offered in the EU. The end device must be in a box (not just a board). An external antenna would be considerred as a plus.