Onyx Holdings Ltd Group Companies
Onyx Holdings Ltd comprises a group of companies which are all highly specialist in the design, manufacture and sale of electronic components and assemblies. Our mission is to anticipate and exceed our customer's expectations.

Operating in niche markets, companies within Onyx Holdings have achieved high profile, individual identities and are now recognised in both UK and international markets as suppliers of high quality products and services.

Onyx performance objectives are ambitious in order to sustain impressive growth. These objectives will be achieved by increasing turnover substantially through:

A key factor in the group’s success is the close co-operation between member companies, a prime motivator for innovation and excellence. The customer is the prime beneficiary.

DIY Phones Ltd
DIY Phones supplies, installs and maintains the telephones systems for businesses using the latest VOIP (Voice Over Internet Protocol) technology. These systems operate over your existing computer network and provide all the features of a conventional PABX system but have two major advantages over such systems.

Firstly, they are simply plugged into your existing computer network and do not require any special cabling of their own. This means you avoid the cost, mess and disruption caused by re-wiring. Secondly, if you have two or more offices, each with a VOIP system installed, calls between the offices will be free. Home and remote workers can use a VOIP phone, plugged into their broadband unit, to call the office free.

Onyx Electronics (Suzhou) Co Ltd
Based in China, Onyx Eelctronics manufacturers EMI shielding products for customers who manufacture their end products in the Far East.

They also undertake high volume subcontract work on behalf of Radun Controls & Phi @ Falmouth customers where the manufacturing cost savings can be much greater than the shipping costs back to the UK.

Radun Controls Ltd
Radun Controls Ltd is a major UK electronics manufacturing company, specialising in the design and development of ABS brake sensors for trucks and lorries and speed measuring sensors. Radun also offer a full electro-mechanical subcontract manufacture service in their ISO 9001:2000 registered factory.

Radun had designed and developed Sentinel, an electronic registration attendance monitoring system for use in schools and colleges. This system has been successfully used in schools throughout the country for over 15 years.

Caspian Climatic is the specialised climate control division of Radun Controls Ltd. They are experts in the design and manufacture of industrial and commercial refrigeration, air conditioning, heated and cooled point of sale displays and food and beverage dispensers. They specialise in providing custom solutions from design and prototype through to packaging and handling and after-sales service.

Caspian also has a successful online shop supplying off-the-shelf refrigeration and heating appliances to the catering and retail trades.