TCL 55S451 55-inch 4K UHD HDR LED Roku Smart TV
The TCL 55S451 is a 55-inch 4K UHD HDR LED Smart TV using the Roku TV platform. It provides 3840 × 2160 resolution, a 60Hz panel refresh rate, HDR10 and HLG support, dual-band Wi-Fi, Ethernet connectivity, and four HDMI inputs including one ARC connection.
Key Features
- 55-inch LED display with 3840 × 2160 4K UHD resolution.
- HDR10 and HLG high dynamic range support with 1.07 billion display colors.
- Roku TV smart platform with voice control compatibility for Siri, Alexa, and Hey Google.
- Four HDMI inputs, including one HDMI ARC connection, plus USB 2.0 and Ethernet.
- FullView edge-to-edge glass design with a dedicated Game Mode.
4K UHD HDR Display
The 55S451 features a 54.6-inch viewable LED display with a native 3840 × 2160 4K UHD resolution. TCL specifies a 60Hz panel refresh rate and support for 1.07 billion display colors.
HDR10 and HLG formats are supported for compatible content. The FullView design uses an edge-to-edge glass appearance, while the dedicated Game Mode adjusts picture settings for gaming use.
Roku TV Smart Platform
The built-in Roku TV platform provides access to supported streaming applications and channels through a customizable home screen. The television also supports voice control with Siri, Amazon Alexa, and Google Assistant.
Apple AirPlay is supported for sharing compatible videos, photos, and music from Apple devices. Dual-band 802.11ac Wi-Fi and Ethernet provide network connectivity.
Audio
The 55S451 has two built-in speakers rated at 10W each for a total audio output of 20W. Dolby Digital Plus is supported for compatible audio content.
Connectivity
The television provides four HDMI inputs, with one supporting ARC, together with one USB 2.0 port, composite audio/video input, optical digital audio output, headphone output, RF antenna input, and Ethernet.
DC Supplies Product Note
The TCL 55S451 uses a 200 × 200mm VESA mounting pattern with M6 × 12 screws. TCL specifies a 1-year limited warranty for the model. The official specifications identify the tuner as ATSC / NTSC / Clear QAM and the wireless connection as 802.11ac 2×2 dual-band supporting 2.4GHz and 5GHz.
Specifications
| Specification | Details |
|---|
| Brand | TCL |
| Part Number / MPN | 55S451 |
| Product Type | 4K UHD HDR LED Roku Smart TV |
| Screen Size | 55 inches |
| Viewable Display Size | 54.6 inches |
| Display Technology | LED |
| Resolution | 3840 × 2160 4K UHD |
| Panel Refresh Rate | 60Hz |
| Aspect Ratio | 16:9 |
| Display Colors | 1.07 billion |
| HDR Formats | HDR10, HLG |
| Smart Platform | Roku TV |
| Audio Output | 20W (2 × 10W) |
| Audio Processing | Dolby Digital Plus |
| HDMI | 4 inputs, 1 ARC |
| USB | 1 × USB 2.0 |
| Composite A/V Input | 1 |
| Optical Audio Output | 1 |
| Headphone Jack | 1 |
| RF Antenna Input | 1 |
| Ethernet | 1 |
| Wireless | 802.11ac 2×2 Dual Band, 2.4GHz / 5GHz |
| VESA Mount | 200 × 200mm |
| VESA Screw Size | M6 × 12 |
| Dimensions with Stand | 48.3 × 29.8 × 10.1 inches |
| Dimensions without Stand | 48.3 × 28 × 3.2 inches |
| Weight with Stand | 22.5 lb |
| Weight without Stand | 22 lb |
| Warranty | 1-year limited warranty |
Frequently Asked Questions
What resolution does the TCL 55S451 support?
The 55S451 has a native 3840 × 2160 4K UHD resolution.
What refresh rate does the 55S451 have?
The television has a 60Hz native panel refresh rate.
Which HDR formats are supported?
The 55S451 supports HDR10 and HLG high dynamic range formats.
What smart TV platform does the 55S451 use?
The television uses the Roku TV smart platform with compatible voice-control features.
How many HDMI inputs are included?
The 55S451 has four HDMI inputs, including one HDMI connection with ARC support.
Does the TCL 55S451 support VESA mounting?
Yes. It uses a 200 × 200mm VESA mounting pattern with M6 × 12 screws.
