Division · Halsworth
TriOptimum Security Products
TriOptimum Security Products protects 52,000 customer sites in 39 countries: research laboratories, data centers, hospitals, ports, government buildings and the vaults of 26 central banks. We make the doors, the controllers that decide who may open them, and the systems that notice when someone tries anyway.
Where our systems work
| Sector | Sites | Typical installations |
|---|---|---|
| Research and university laboratories | 11,800 | Controlled areas, biosafety suites, clean rooms |
| Data centers | 2,900 | Halls, cages and meet-me rooms, including every TriOptimum data center |
| Healthcare | 7,400 | Pharmacies, theatres, records rooms, neonatal units |
| Transport | 3,150 | Airport airside doors, port terminals, rail control centers |
| Government and defense | 6,600 | Ministries, courts, archives, secure registries |
| Banking and finance | 4,050 | Branch vaults, cash centers and the vaults of 26 central banks |
| Offices and commercial | 16,100 | Headquarters, retail back offices, plant rooms |
- Headquarters
- Halsworth, England
- Founded
- 1972
- President
- Sabine Kowalczyk
- Employees
- 31,200
- Customer sites
- 52,000
- Revenue 2025
- $9.84 billion
The K-Series keypad replaced the AccessNet 4K and its successors from 2009. It fits the same back box, uses the same four-digit code scheme and reads the same code tables, which is why so many customers have upgraded without touching their walls or their staff records.
The current K9 adds card and phone credentials, tamper-evident logging and encrypted links to the management console.
Products and services
Products A–Z- Access control
- The AccessNet K-Series of keypad, card and biometric controllers, from a single door to a campus of 40,000, managed from one console. K-Series controllers accept code tables from every earlier AccessNet model, so customers can replace hardware without re-enrolling staff.
- Perimeter and intrusion detection
- Fence, ground and radar sensors under the Sentinel name, tuned so that a deer is not an incident and a ladder is. Sentinel protects 1,900 kilometers of perimeter, including eleven international airports.
- Vaults and secure rooms
- Vault doors, strong rooms and server enclosures from the Halsworth Vault Works, which has made them since 1972. The heaviest door we have delivered weighs 34 tonnes and opens with one hand.
- Monitoring services
- Alarm receiving, video verification and guard dispatch from two monitoring centers, with a combined 1.4 million events handled each month.
Legacy AccessNet controllers
Support for the AccessNet 4K ended on 1 January 2004. Owners of 4K controllers still in service should change any code left at its factory setting and contact Security Products about replacement. Trade-in credit is available until 31 March 2027.
News
Newsroom-
Sentinel to protect the perimeter of a major European hub airport
TriOptimum Security Products will install 47 kilometers of fence, ground and radar sensors under a ten-year contract.
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AccessNet K9 adds phone and fingerprint credentials to the K-Series
The new top-of-range controller fits the same back box and reads the same code tables as every AccessNet controller since 1993.