Questions and Answers

Technical Questions


Specifications & Customer Support


What are the product's dimensions ?

4,7'' x 2,3'' x 0,8'' (12 cm x 6 cm x 2 cm).

What is the weight ?

0,5 lbs / 8,1 ounce (230 g).

Can it be connected  to a smart phone wireless ?

Yes. We will supply you Masterkey 4.0  adapter (HE and BE) with wireless connection.


How big is the max projector size ?

Up to 120'' (300 cm).


How long does the battery last?

Masterkey  has a built-in internal battery that last up to 120 minutes and can be used as a charging station for other devices.


What colors does it come in ?

Black only.


Where can the virtual keyboard be projected ?

The virtual keyboard  can be projected on any flat surface.


Which types of phones  does  this  device  work  with ? 

It  operates  on ANDROIDS,  all smartphones,  OS  and  WINDOWS.


How  is  this  device  powered?  How  is the  battery charged? 

The  same way  as  your  smart  phone.


Can  it  be  used  on  an airplane?

The  device  is  designed according  to  the  IATA  standards.


Does Masterkey 4.0  adapter come with a warranty?

Yes! Masterkey 4.0  adapter comes with a one year warranty starting from the date of shipping. Your Masterkey 4.0  adapter warranty covers all defects in material and workmanship, except the following:

  • Damage caused by accident, misuse, abuse, disassembly, unauthorized modification or neglect.

  • Damage caused by liquid contact.

  • Damage resulting from failure to follow instructions contained in your instruction manual. 

  • Damage resulting from the performance of repairs by someone not authorized by our company.


What certifications do built-in projector and laser keyboard have ?

Built-in components have FCC and CE approved.


What countries and mobile networks will support the Masterkey 4.0  interface?

Masterkey 4.0  adapter is not locked to any particular network or tech. It works in all countries that provide GSM/3G/LTE-based network services. It also supports  the  LTE standards to provide 4G mobile broadband connectivity around the world (subject to network availability and data fees).


Do you have customer service and technical support?

Yes, we do! We are here to answer all your questions. We have dedicated live chat hours for real time support.

I am a distributor or reseller. How do I contact you?

Please email via this site.


I am a developer. How do I contact you?

Please email via this site.


Where do you ship? 

We will be shipping these devices worldwide. The Masterkey 4.0  adapter will be initially shipped with English menus but we are currently adding Japanese, French, German, Spanish and Chinese language menus and documentation. 

Didn't find the  answer to your question? 

Please submit a request if needed. We're happy to help!

Contact us for more information

© 2020 by MK Team

MK team

ATRIYA team, London, UK

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