Pretech did several projects with smart home gateway for some world famous companies, we provide the HW part, control/display terminal. Such as:

1) 5.5" wall panel, with POE and Zigbee

2) 7" and 8" wall panel, with POE, Zigbee, ISM, NFC/RFID, together with SW developed by customers' team, for US and EU market.

3) No screen smart home gateway box, for a national rental group in US.

Some pics below for your reference,

We have developed a touch screen device which has a broad range of industrial applications, tablet pc without battery, touch screen without camera, tablet pc with two usb port, open frame smart terminal etc. 

please contact us for more detail.