What is the device called that can wirelessly share the TV signal at home to another TV?

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The device that allows you to wirelessly share your home TV signal with another TV is commonly known as a wireless HDMI transmitter and receiver. This system typically includes two components: the transmitter, which connects to the primary TV or media source (e.g., set-top box, Blu-ray player), and the receiver, which connects to the secondary TV. These devices transmit high-definition video and audio signals wirelessly over a specific frequency, often up to 5 GHz, ensuring minimal lag and interference.

Alternatively, some smart TV brands offer screen mirroring or casting devices, like Google Chromecast or Amazon Fire TV Stick, which can duplicate content from one TV to another if connected to the same Wi-Fi network.

For cable-free setups, you may also consider media streaming boxes that support multi-room streaming, such as Apple TV or Roku.

These solutions are ideal for expanding entertainment options without additional cables or subscriptions, offering convenience and flexibility for modern households.