Key Digital KD-4KWHCEX Wireless 4K HDMI Extender Kit 100 ft with HDR10

Key Digital KD-4KWHCEX: Wireless 4K HDMI Extension

The Key Digital KD-4KWHCEX is a wireless 4K HDMI extender kit that transmits 4K 60Hz video with HDR10 from a transmitter to a receiver over a 5 GHz wireless link. Shipping as a matched transmitter-and-receiver pair, it moves a source signal to a display up to 100 ft (30 m) away with no cable running between the two units. Instead of pulling HDMI or network cable through walls, the picture and its audio travel over the air on a dedicated wireless channel. For rooms where running wire is impractical, it delivers a full 4K path without opening a wall.

Wireless Range and 5 GHz Technology

The kit delivers optimal quality up to 100 ft (30 m) and can reach as far as 164 ft (50 m) in ideal, open environments. It uses a 5 GHz wireless band, which offers more clear channels and less congestion than the crowded 2.4 GHz band used by many household devices. That signal transmits through walls and ceilings with minimal range loss and strong resistance to interference, so the picture stays stable even when the display sits in another room. A source hidden in a closet can therefore feed a screen a floor or a room away.

4K HDR Image Quality

Video is supported up to 3840x2160 at 24/25/30/60Hz in 4:4:4 chroma with signals up to 18 Gbps, including HDR10 for a greater luminance range and more lifelike color. HDR10 is a high-dynamic-range format that widens the gap between the brightest highlights and the darkest shadows, giving compatible content more depth and realism. HDCP 2.2 support plus TMDS re-clocking and signal regeneration keep protected 4K content authenticating and looking clean at the receiver. The result is a wireless link that preserves the image quality expected from a wired 4K connection.

Audio and Local Pass-Through

An HDMI pass-through port on the transmitter feeds a local monitor or audio system while the same source streams wirelessly to the receiver. The pass-through carries surround-sound formats up to 5.1/6.1 at the source location, while the wireless link to the far display supports up to 2-channel audio. This lets a source drive a nearby AV receiver in full surround and a distant screen at the same time from one box. A media room can keep its main system fully immersive while sending picture and stereo sound to a second display.

Source Control and Multi-Set Use

An included IR sensor and emitter let a remote at the display control the HDMI source back at the transmitter, so a hidden media player stays fully operable. The sensor at the receiver captures the remote's commands and relays them across the wireless link to the emitter at the source, bridging line-of-sight IR through walls. Point-to-point pairing across four unique channels allows up to four extender sets to run at the same job site without interfering with one another. A bar or retail floor can therefore feed four separate displays from four hidden sources on non-overlapping channels.

A Complete, Ready-to-Install Kit

Everything needed ships in the box, including the transmitter, receiver, two power supplies, IR sensor and emitter, antennae, and mounting brackets with screws. Two 5V/2A DC supplies power the pair from standard 100-240VAC outlets, so the kit works on common wall power anywhere. Having the mounts, antennae, and control accessories included means an installer opens one box and has the complete link on hand. This makes setup quick for both temporary events and permanent installations.

Where the KD-4KWHCEX Fits

Homes, bars and restaurants, retail displays, classrooms, and rental or staging events use this wireless kit wherever a wired run is too costly or disruptive. By sending 4K HDR through walls with source control and local pass-through, it links a source to a distant display cleanly and without construction. A retail floor can place screens where wiring never reached, and a staging crew can stand up a display in minutes at a temporary event. Because it needs no cable between the units, it also suits historic or finished spaces where opening a wall is not an option.