This HDMI Switch has the key-press-switching function, you can push the button to change what port you want to use.
3 HDMI ports in and 1 HDMI out for various HDMI devices, 3x1 HDMI Switch allows you to connect up to 3 different HDMI input devices to your TV, monitor, or projector.
HDMI switch is designed to intelligently switch between input devices automatically when they are powered on and off. Up to 3 input devices may be connected.
HDTV 4K(3840x2160P) 30Hz resolution, 3D display supported.
Exquisite workmanship, easy and convenient for installation, reliable in use.

Specifications:
Bandwidth: 2.97Gbps
Input port: 3 x HDMI
Output port: 1 x HDMI
Audio output: PCM2, 5.1, 7.1CH, Dolby 5.1, DTS5.1, D-TrueHD, DTS-HD
Power consumption: 0.2W
Electrostatic protection mode: ±8kV (air gap discharge); ± 4kV (contact discharge)
Working temperature: 0â ~ 40â / 32â ~ 104â
Storage temperature: -20â ~ 60â / -4â ~140â
Material: Plastic
Color: Black
Note: The product does not support HDCP and HDR.

Packing details:
1 x HDMI 3 Port 4K HD video switcher