Mul-T-Lock Solutions

Known for their product excellence and innovative design, Mul-T-Lock High Security Solutions address all your needs. From residential to commercial and industrial applications, Mul-T-Lock offers smart, strong security. Using advanced and patented technology, Mul-T-Lock High Security Solutions range from keys and cylinders and through to comprehensive access control and electronic locking systems.


MT5+ keys combine patented technology and advanced key control for enhanced security. Telescopic pins create a dual shear line while the innovative, patented Alpha Spring located at the tip key, engages a unique pin at the rear of the locking mechanism to create an additional shear line for enhanced intrusion resistance.

The side-bar mechanism also allows for millions of possible combinations making MT5+ an ideal choice for complex keying needs. In addition, MT5+ keys control unauthorized key duplication via a coded magnetic duplication card – which can only be read by a dedicated Mul-T-Lock key cutting machine at an authorized locksmith.

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Mul-T-Lock's extremely wide range of key in knob cylinder options allow you to easily upgrade the security of existing knobs and levers by simply switching out the cylinder – no hardware modifications or reinstallations required.

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Mul-T-Lock’s popular C-Series heavy duty, patented High Security padlocks offer a robust design, superior locking and plenty of options. Also equipped with a protective shutter to prevent dust contamination and drainage holes to prevent freezing, the C-series Line is available in many models with varying body sizes and shackle diameters and clearances. This versatile line is sure to meet your padlock needs.

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Knowing who is at your door before you open up is a simple yet very effective way to stay safe and secure. Solutions like Mul-T-Lock's GotU Digital Door Viewer which let's you view and record who's at your door give you better control and protection.

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Keys, tags, cards – with today’s complex High Security systems, you may need an entire collection of opening devices just to walk through one building. Instead of a whole collection keys, now you can use just one SynerKey!

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Mul-T-Lock MT5®+ Patented Keys combined with the MT5+®High Security cylinder platform provide you with patented protection by enabling excellent key control. Key duplication requires presentation of a specialized magnetic strip key order card to an authorized dealer with a uniquely serialized key cutting machine.

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The Interactive®+ system combines an enhanced variation of the long-famous Interactive® telescopic pin tumbler mechanism with a spring-loaded, unique pin in the cylinder plug to produce a ‘virtual combination’ that may only be achieved when the Interactive®+ Patented Keys is inserted in the lock.

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The Interactive® system was the basis for the more current Interactive®+ platform. Patented only until 2014, we encourage customers with existing Interactive systems to upgrade to Interactive®+ to ensure continued patent protection.

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Mul-T-Lock Integrator® Patented key, standard security platform is a budget friendly solution which provides enhanced key control by utilizing patented keys and requiring presentation of a key order card for key duplication but does not offer physical high security.

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A scalable solution, Mul-T-Lock's SMARTair access control platform operates via user-friendly, secure online software and easy-to-use programming tools. Whether you require software for 2 doors or 2000

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