“Alexa, Turn On Projector”

Optoma’s first 4K Ultra HD projector to feature Amazon Alexa voice control – the UHD51A – is now launched in the UK.

Available on Amazon UK for £1,549.99, the new projector offers the ultimate smart home entertainment solution with intuitive control along with 4K crystal clear detail in every image – bringing content to life on the big screen.

“Optoma is excited to be among the first brands to bring Alexa natively to 4K home entertainment projectors,” said Kishan Mistry, Senior Product Manager at Optoma EMEA. “With industry-leading projection technology coupled with Alexa, we’re enabling instant control for a movie or gaming session as users switch inputs, launch content, adjust the volume and more with their voice.”

UHD51A with Alexa Echo

In addition to Alexa support, the UHD51A comes equipped with a 4K UHD media player, a wireless USB dongle, USB reader and 2,400 lumens for vibrant big-screen entertainment. It boasts High Dynamic Range (HDR) compatibility, HDCP 2.2 support and includes stereo speakers that provide powerful audio.

Installation is simple with vertical lens shift for fuss free positioning and a host of connection options such as two HDMI 2.0 ports. The compact UHD51A with its stylish sleek black casing is also lightweight and easy to move around.

With full 8.3 million on-screen pixels, the new model meet the Consumer Technology Association (CTA) requirements for 4K UHD and comply with the CTA High Dynamic Range (HDR) compatible display standards. This guarantees razor sharp, vivid images capable of showing more details than standard HD.

Its sophisticated PureMotion frame-interpolation technology eliminates motion blur or image judder, even in high-speed action films or fast-paced sports.

Alexa Smart Home Skills:

  • Alexa, turn on
  • Alexa, turn off
  • Alexa, change volume to 8 on (volume range is 1-10)
  • Alexa, change input to HDMI 2 on
  • Alexa, change input to HDMI 1 on
  • Alexa, change input to VGA on
  • Alexa, change input to multimedia on (controls content on USB drive using built in media player – see below)

4K UHD/1080p USB media player commands:

  • Alexa, play on (playback will begin with first file on USB disk/drive)
  • Alexa, pause on
  • Alexa, stop on
  • Alexa, next on
  • Alexa, previous on
  • Alexa, fast forward on
  • Alexa, rewind on
  • Alexa, start over on (playback current file from the beginning)

UHD51A key features:

  • 4K UHD resolution and HDR compatible
  • Voice control – Alexa supported device
  • Amazing colour – accurate 100% Rec.709 colours, 2400 lumens
  • Feature packed – built-in media player and wireless
  • Fluid viewing – PureMotion frame interpolation processing
  • Digital connectivity – 2x HDMI and HDCP 2.2 support
  • Easy set-up and operation – vertical lens shift
  • Powerful sound – built-in stereo speakers

A full specification sheet for the UHD51A together with information on the full product range, brochures and images of the projectors are available from






Lamp life

15,000 hours



Contrast ratio



2400 ANSI lumens

Throw ratio

1.21 – 1.59:1

Lens shift

Vertical: +10%

Screen sizes

0.87 – 7.68m (34.1″ – 302.4″) diagonal 16:9

Built-in speakers

2x 5W


Full 3D


392 x 281 x 118mm (w x d x h)


2x HDMI, VGA, Audio in, Audio out, S/PDIF out

12V trigger, USB-A power, USB-A wireless Alexa, USB-A reader/wireless, USB-A service

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