M-20 Keyswitch

Dewhurst key switches are designed to complement our range of pushbuttons and indicators and are available in a wide range of options such as plastic or stainless steel finishes, illumination and flat keys or round (high security) keys. They are suitably rated to cater for typical applications in lift installations requiring key switch control such as fans, lighting and transfer of car operation controls.

• Styled to match pushbutton ranges
• Numerous key options
• Contact block configurations for all requirements
• Key switch function can be engraved on the face of the key switch itself (US91 = round) switches only
• LED halo red illumination (flat key only)

The Dewhurst I-KEY Security Access Switch is a general purpose security module. It uses iButton type touch memories to identify the keys. If a predefined key touches on the stainless steel probe,  I-KEY shorts the relay contacts for five seconds and leaves the contacts open after this period. I-KEY warns the user with visual and auditory ways with on-board beeper and in-probe LED ring.  I-KEY can be easily programmed with on-board pushbuttons. The end users can create their own MASTER KEY to record a new key to the module memory.

• Offers control of lift
• When a registered key is put onto the probe, relay keeps contacts for 5 seconds.
• When a foreign key is put onto the probe, system makes audible warning with red light.
• To register, a new key is put onto the probe while the REC button on the unit is pressed
• Up to 512 keys kept in memory