Mechanical & Electronic access in one key. MUL-T-LOCK SynerKey™ - a mechanical key with a key head that houses transponders for electronic access control systems. Allows users to conveniently use a single all-in-one key for opening both mechanical cylinders and doors secured by RFID access control systems. Keys, tags, cards – with today’s complex High Security systems, users often need an entire collection of opening devices just to walk through one building! A whole collection – or just one SynerKey! True to its long-standing One Key Endless Possibilities principle, MUL-T-LOCK has developed the new SynerKey. Suitable for apartment and office buildings, commercial and industrial facilities, seniors’ homes or any other premises used by a large number of residents or workers. Features Key head may incorporate round or capsule transponders. Compatible with all mechanical Mul-T-Lock platforms, such as Classic® and Interactive®. Compatible with electronic RFID access control systems, such as Mul-T-Lock’s IntelleQt®, IntelleQt® Pro and ProQsimity®. Specifications Colors of plastic key head covers: black, blue, red, green, orange, yellow Transponder dimensions: Round transponder: 22 mm (7/8") diameter Capsule transponder: 2 mm (5/64") diameter, 10 mm (13/32") length Provide all necessary information from your personal key card to get additional keys for your existing lock or cylinder.