ASSA Triton² ASSA Triton² is our next generation of high security, high quality, patented master key systems. It offers the highest security with patent protection until 2036 and exceeds the requirements of BS EN 1303:2015. An unrivalled 1.5 billion combinations (5900 range) allows the most complex requirements to be met. 5900 rangeThe ASSA Triton² 5900 range includes a 4 pin side bar which offers an unrivalled 1.5 billion combinations, ensuring every master key system is unique. The platform also has a wide range of cylinder... 3900 rangeThe ASSA Triton² 3900 range includes a 2 pin side bar which offers an excellent 3.4 million combinations, complimented with a wide range of cylinder shapes and functions for any application.