Pushbutton Access Control – Mechanical Digital Door Locks

Mechanical digital locks are also known as pushbutton locks because this is what they are.  This page details the features, advantages and applications for this simple but effective form of access control.

What are Pushbutton Locks?

Pushbutton locks are robust, all-mechanical locks offering the dependability and convenience of key-less access control for a wide and continually expanding range of applications.  Each model operates with an entry code that is set when the lock is installed.  Codes can be reset in seconds, without removing the unit from the door.

Economically designed to provide effective and efficient access for authorised persons only – in offices, warehouses, on storerooms, locker rooms, cabinets, garages, caravans, sheds, gates, at home, almost anywhere – without the inconvenience of keys.

How do they work?

Pushbutton locks operate only when the correct buttons are pushed in the proper sequence and the turn knob is rotated.  A new combination is set when the lock is installed using as many of the 5 buttons as desired.  Buttons may be pressed individually or in unison.  Example: a combination of 2-3-4 pushed individually is NOT the same as 2 and 4 together, then 3.  Thousands of possible combinations make it virtually impossible to guess a code.


  • No keys or cards
  • No wiring
  • Combination is chosen by the owner, can be changed as often as needed
  • Variety of models fit any installation, from a government research lab to a tool box
  • Cannot be picked
  • Fully mechanical – not affected by power failures
  • Robust, weather-resistant all-metal construction
  • One hand operation
  • Large easy-to-depress pushbuttons
  • Never locked out


  • Reduce hassle – no keys to issue or control, no keys to retrieve when employees or tenants leave
  • Saves money – no keys or key cylinders to change or replace
  • Saves time – change combinations cost-free in seconds whenever there is a change in personnel


  • Public buildings: public entrances, WCs
  • Commercial buildings: offices, computer rooms, lifts, alarm systems, garages
  • Industrial buildings: hazardous storage, tool boxes, research labs
  • Airports: runways, restricted areas
  • Schools and universities: audio-classrooms, dormitories, kitchen areas, staff rooms
  • Hospitals and medical centres: drug storage, exam rooms, food storage, laboratories
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  • Dr xxxxx Hampshire

    Your staff are always pleasant, helpful and informative.  It is also nice to have the same person every time to do the service.

  • Mr M Cxxx Portsmouth, Hampshire

    Quick response and very polite.

  • Mrs G Richards Christchurch, Dorset

    Polite and efficient engineer who treated us and our home with respect.

  • Mr T xxxxxxx Portsmouth, Hampshire

    The service we receive is excellent and always has been.

  • J M Sewell Chichester, West Sussex

    CIA is well run and the equipment installed is always first class.

  • Mr A***** Clanfield, Hampshire

    Local company with a good reputation and we have been very impressed so far – thank you.

  • Mr C Sxxxxxxxxx Fareham, Hampshire

    Very polite. Returned when he said he would as didn’t have enough batteries.

  • Mrs E Mxxxxx Havant, Hampshire

    Engineer was polite, well groomed and very helpful. Even my husband who is partially sighted understood how to use the system. The engineer even used the vacuum cleaner.

  • Mr D S Freezer Bognor Regis, West Sussex

    Your people have been Helpful – Honest – Informative – Perfect, Thank you.

  • Mr Evans Denmead, Hampshire

    Technician was excellent, took care of my property, hoovered as he went along and took the time to channel the wiring properly and back filled as required – Absolutely first class service.  I was hesitant to use CIA but friends recommended them and I am very pleased that I followed up on their advice.