The Raspberry Pi TV HAT is a DVB-T2 Digital TV receiver add on for the Raspberry Pi, compatible with the Raspberry Pi 3 Model B+ or Raspberry Pi Zero W (and older Raspberry Pi 2 & 3 models).
The Raspberry Pi TV HAT allows you to receive digital terrestrial TV broadcast systems which include DVB-T and DVB-T2 on a Raspberry Pi. This means that you can receive and view TV on a Raspberry Pi or create a TV server that allows you to stream received TV over a network to other devices (including PCs, tablets, smartphones (via apps), media centres and more).