Model KRD-3 (Function “A”   Dual Custody shown above - actual size)                  

DESCRIPTION  The KRD-3  Key Retainer Device (3 core model) is unique, versatile and very valuable.  This model offers the capability of providing two different functions depending on how the user / installer initially configures the retained key core(s) and the release key core(s).  It is an excellent “tool” in your key control arsenal – a simple solution to complicated problems that is often ignored – it provides an easy way to establish accountability and eliminate human mistakes by physically controlling the desired locking sequence or procedure(s) and it drastically reduces the risk exposure to higher level keys (GM, M and Controls) by requiring them to remain on-site.  The actual keys are “buried” in the core for additional security.  The cores are spaced and oriented to allow for large bow keys and key rings with I.D. tags attached. 

 OPERATION    A very simple, but highly effective “put-and-take” system with 2 possible configurations:

Function “A”   Dual Custody  –  2 keys must be present to release 1 retained key

One key is retained in a core (at ¼ turn) until two “release” keys are simultaneously inserted in the other cores and rotated 90° (¼ turn).  Then the “retained” key can be removed for use while the “release” keys are held (trapped) for visual accountability purposes.  This cycle is repeated in reverse when the normally “retained” key is returned and the “release” keys are removed (retrieved) by the authorized users.

Function “B”  –  1 key releases 2 retained keys

Two keys are retained in cores (at ¼ turn) until a “release” key is inserted into the remaining core and rotated 90° (¼ turn).  The “release” key is now held (trapped) for visual accountability purposes while BOTH “retained” keys MUST be simultaneously removed (Warning! They are both now untrapped/unprotected) at this stage in the sequence of operations.  This cycle is repeated in reverse when the normally “retained” keys are returned and the “release” key is removed (retrieved) by the authorized user. 

SPECIFICATIONS  (Accepts 5, 6 and 7 pin cores – not supplied)

Case :  Precision machined from solid aircraft aluminum bar stock

Size:  2¼”  High  x  6¾”  Long  x  2¼”  Deep             Weight: 3 Pounds

Mounting:  Three - #10 screw size through-holes are provided behind the cores.  When the cores are installed these screws are concealed and protected ☼.  Five ¼-20 tapped holes are provided in the back for attachment.  The creative usage of readily available ¼-20 hardware (not supplied) will provide a super-secure additional method of mounting to panels and through thick walls or other objects where access to the back of the mounting surface is available.

Finish:  Clear anodized – 628.  Optional colors / special batch order:  Red, Blue, Black, Gold, Green, Bronze and Purple

Options:  -S = an internal low-voltage SPDT micro-switch with 36” of 3-wire, 22 gauge jacketed cable.-T = Tamper alarm switch is included (specify type)

Standard package includes:  Three #10 x 2” FHSMS, three #10-24 x 1¼” FHMS ☼, an instruction sheet for installation and operation and a Mounting Template