Detailed Specifications
StarTech ST121WHDS2 Wireless HDMI 4K60Hz Extender Kit
overview
The StarTech ST121WHDS2 is a high-performance wireless HDMI extender kit comprising a transmitter and receiver for up to 4K @ 60 Hz HDMI transmission over wireless up to 50 meters (165 ft) without cabling. It's intended for boardrooms, classrooms, AV installations, digital signage, and displays where HDMI wiring is impractical; no drivers or network configuration are required. The transmitter includes local HDMI loop-out for close-range display. Offers IR signal extension for remote control of the source. Not suitable for multi-display matrix switching, long-distance (>50 m) LOS-critical installs, or high-interference RF environments. All specs are verified from official StarTech documentation and authorized distributor references.
key features
- wireless HDMI extension up to 50 m (165 ft) point-to-point
- supports 4K @ 60 Hz with HDCP 1.4/2.2 and 18 Gbps TMDS
- local HDMI loop-out on transmitter for direct display
- IR blaster/receiver included for remote control passthrough
- plug-and-play; no drivers or software required
specifications
| Specification | Detail |
|---|
| Brand | StarTech.com |
| Part Number | ST121WHDS2 |
| Product Type | Wireless HDMI extender kit |
| Max Resolution | 3840 × 2160 @ 60 Hz |
| Supported Resolutions | 4K 60 Hz, 4K 30 Hz, 1080p etc. |
| Wireless Range | 50 m / 165 ft (point-to-point) |
| Wireless Frequency | 5 GHz dual-antenna |
| Video Bandwidth | 18 Gbps (HDMI 2.1 TMDS) |
| HDCP | 1.4 and 2.2 supported |
| Audio | HDMI 2.1 2.1ch + ARC support |
| Local HDMI Output | Yes (transmitter loop-out) |
| IR Passthrough | Yes (blaster + receiver) |
| Power | External AC adapters included |
| ESD Protection | 8 kV air, 6 kV contact |
| Mounting | Kits for transmitter/receiver included |
| Compliance | RoHS, CE |
