CR4 Wireless HDMI Extender Kit 4K to 1080p Low-Latency

The CR4 Wireless HDMI Transmitter and Receiver is a plug-and-play kit that wirelessly mirrors or extends video from USB-C, HDMI, and laptop sources to a TV or projector with low latency and no Wi‑Fi required.

This compact transmitter/receiver bundle creates a direct peer-to-peer wireless link that works without routers, apps, or Bluetooth. It accepts 4K input and outputs stable Full HD 1080p at 60 Hz, using intelligent 5 GHz/2.4 GHz switching to cut interference and keep audio and video synchronized. With included adapters and two power cables, you can set up screen sharing quickly for meetings, classrooms, home theaters, or portable presentations.

How does the CR4 kit connect devices without a network?

The system establishes a direct wireless connection between the transmitter (source side) and the receiver (display side), so there’s no need to join an existing Wi‑Fi network. It’s a hardware link that’s ready immediately after power and HDMI connections are made.

• Peer-to-peer link—no router, no pairing apps.
• Includes USB-C, mini-HDMI, micro-HDMI adapters for broad device support.
• Receiver outputs via standard HDMI to TVs, projectors, or monitors.

What video quality and latency should I expect?

CR4 accepts up to 4K input and reliably delivers Full HD 1080p at 60 Hz at the display end, with ultra-low latency aimed at maintaining audio/video sync for presentations and light gaming. It’s not designed to replace wired 4K60 displays for competitive, high-frame-rate gaming, but it provides smooth playback and minimal delay for most uses.

• 4K input decoding with 1080p60 output for crisp display compatibility.
• Engineered for near real-time transmission to reduce lip-sync issues.
• Best for streaming, meetings, video calls, and classroom media.

How far can the signal reach and how stable is it in busy environments?

The extender kit is rated for up to 328 ft (100 m) in open space, with actual range varying by walls and interference. Dual-band radio automatically selects between 5 GHz and 2.4 GHz to improve stability in crowded networks and help maintain a consistent image in offices or multiroom setups.

• Up to 328 ft (100 m) in unobstructed environments.
• 5 GHz prioritized for lower latency; 2.4 GHz used when penetration is needed.
• Designed to handle common office and apartment wireless congestion.

Which devices are compatible and what do I need to check first?

CR4 supports modern USB-C devices with DisplayPort Alt Mode (including recent iPhone models with native USB-C like iPhone 15 and newer), laptops with Thunderbolt or DP Alt Mode, cameras, tablets, and HDMI-equipped sources. The receiver only accepts HDMI output, so displays must have an HDMI input; VGA or DisplayPort-only screens are not supported without adapters.

• Works with USB-C phones/tablets that support video output and with laptops/MacBooks.
• Receiver requires a display with standard HDMI input.
• Adapters included: USB-C to HDMI, mini-HDMI, micro-HDMI, plus power cables.

Who is this for: The CR4 Wireless HDMI Transmitter and Receiver kit is aimed at professionals, educators, and home users who need a reliable, fast way to mirror or extend screens without running long cables or configuring networks. It’s especially useful for presenters, teachers, conference rooms, small event venues, and anyone with USB-C devices that support video output who wants a quick, portable wireless display solution backed by a 24-month warranty.