CR4 Wireless HDMI Transmitter and Receiver, Low-Latency 5G, Plug & Play, 4K In/1080P Out, Extender Kit to Stream Video/Audio from PC/Laptop/USB-C Phone to Monitor/TV (Gray)
Quick take
The CR4 Wireless HDMI extender kit is built for simple, app-free screen sharing from a compatible laptop or USB-C device to an HDMI TV, projector, or monitor. It targets near real-time use (presentations, video calls, and everyday media) with 5 GHz dual-band stability, but you should plan for the practical requirement that both the transmitter and receiver need power.
Pros and cons
Pros
- Plug-and-play setup with no Wi-Fi network, no apps, and no Bluetooth required.
- Supports 4K input decoding and outputs 1080p at 60 Hz for Full HD display.
- 5 GHz dual-band design automatically helps maintain a stable wireless channel.
- Includes multiple adapters for different source USB/HDMI connection types.
Cons
- Both the transmitter and receiver require separate power, so you may need extra USB power adapters.
- Buyer-review evidence is limited, and there is at least one complaint related to performance expectations (so outcomes may vary by use case).
- Does not support sources that cannot provide video output over USB-C DisplayPort Alt Mode.
What buyers think
Buyer-review evidence highlights fast setup and convenience for work use. Several comments emphasize quick connections for meetings and demos, with a clean, cable-free setup that helps keep conference or classroom presentations looking organized. Users also describe the range as sufficient for sending video to another room in typical setups. The most notable buyer-fit limitation mentioned is the need for power for both units, since USB power adapters are not automatically available. Overall, the review sample is small and not detailed enough to confirm consistent results across heavy interference environments or gaming-style latency demands.
How the CR4 wireless HDMI extender works
This is a true wireless HDMI extender kit, with a transmitter that connects to your source and a receiver that plugs into your HDMI display. It uses a direct peer-to-peer approach, so you are not relying on a home Wi-Fi network, and you do not need companion apps to mirror or extend your screen. The system is intended for clean, cable-light setups in offices, classrooms, conference rooms, and home theaters.
Video and audio performance for real-world use
On the display side, it outputs Full HD 1080p at 60 Hz. It also supports 4K input decoding, which can be useful if your laptop or USB-C source produces a higher-resolution signal. The kit is positioned as low-latency for near real-time viewing, which tends to matter most for presentations, live video calls, and everyday content where obvious delay would be distracting.
Wireless stability and range, what to expect
The kit is designed around dual-band wireless behavior (5 GHz and 2.4 GHz), with automatic selection of the more stable channel to reduce interference. Marketing claims point to an extended range up to 328 ft (100 m) in open environments, but real placement will depend on walls, obstacles, and the level of wireless activity in your room.
Compatibility you should confirm before buying
USB-C sources (including iPhone 15 and newer)
The transmitter supports native USB-C video output via DisplayPort Alt Mode. That is the key requirement for phone and tablet use, including iPhone 15 and newer models. If your USB-C device does not support video output, it will not be supported.
Laptops, pcs, and HDMI displays
The receiver is HDMI output only, so you will need a display with a standard HDMI input port (TV, projector, or monitor). HDMI-free displays like VGA or DisplayPort monitors without an HDMI input are not supported.
What’s included to make setup easier
The kit includes four transmitter-side adapters (USB-C to HDMI 4K, Mini HDMI, Micro HDMI, and Type-C to USB-A adapters) plus two USB-A to USB-C power cables. That adapter variety is helpful if you are moving between different source devices in a classroom or meeting space.
Pros and cons from a buyer decision point of view
Pros
- Convenience first, no Wi-Fi network, apps, or Bluetooth pairing required.
- Good fit for business and classroom scenarios where you want quick setup and fewer cables.
- Dual-band wireless design with automatic channel selection for stability.
- 1080p/60 Hz output is suitable for most work and media viewing needs.
Cons
- You must power both units, which can add a small planning step for outlets and USB adapters.
- Wireless performance can vary by room conditions, especially with obstacles or heavy interference.
- Compatibility depends on your source supporting USB-C video output (DisplayPort Alt Mode) when using USB-C phones or tablets.
Who should buy it
Choose the CR4 Wireless HDMI transmitter and receiver if you want an app-free way to mirror or extend your laptop or compatible USB-C device to an HDMI TV, projector, or monitor for everyday work, training, presentations, and casual viewing. It is also a practical option when you frequently change rooms and want to avoid long HDMI cable runs.
Who should skip it
Skip this kit if your display does not have an HDMI input, if your USB-C source does not support DisplayPort Alt Mode, or if you expect it to act like a dedicated gaming wireless link where very low delay is the only priority. Also consider skipping if you do not have a convenient way to power both transmitter and receiver in your layout.
Verdict
The CR4 Wireless HDMI extender kit is a straightforward, cable-light solution for sending an HDMI signal wirelessly from compatible sources to an HDMI display. It’s particularly well matched to presentations and everyday viewing where fast setup matters. Just make sure you can power both units and confirm USB-C video output compatibility for phone and tablet use.
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FAQ
Does this wireless HDMI extender require Wi-Fi?
No. It is designed to work without a Wi-Fi network and without using apps.
Can it work with iPhone 15 or newer?
It is designed for USB-C video output devices, including iPhone 15 and newer models, as long as your setup supports video output over USB-C (DisplayPort Alt Mode).
What resolution does it output?
It outputs Full HD 1080p at 60 Hz, with support for 4K input decoding.
Do both the transmitter and receiver need power?
Yes. Both units require their own power connection. The kit includes USB power cables, but you may need to supply USB power adapters.
What displays does the receiver support?
The receiver outputs to HDMI displays. You need a TV, projector, or monitor with an HDMI input, VGA and DisplayPort monitors without HDMI input are not supported.
Is it good for gaming?
It is positioned for low-latency viewing, but buyer-review evidence is limited and it is not described as a gaming-focused wireless display solution. If you are very sensitive to delay, you should consider your gaming requirements carefully.
Specifications
| Product Title | CR4 Wireless HDMI Transmitter and Receiver, Low-Latency 5G, Plug & Play, 4K In/1080P Out, Extender Kit to Stream Video/Audio from PC/Laptop/USB-C Phone (Like iPhone 15 or Newer) to Monitor/TV (Gray) |
|---|---|
| Category | Electronics > Television & Video > AV Receivers & Amplifiers |
| Brand | CR4 |
| Manufacturer | CR4 |
| Model Name | CR4 |
| Model Number | CR4-WHDMI-Gray |
| Color | Gray |
| Connectivity Technology | HDMI |
| Resolution | 1080p |
| Controller Type | Button Control |
| Compatible Devices | Television, Personal Computer, Laptop, Tablet, Smartphone |
| Video Codec | H.264, H.265/HEVC |
| Smart Home Compatibility | Not Smart Home Compatible |
| UPC | 990312364931 |
Available variants
Color
- Gray
- Black
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