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MDI mercury contactors/relays are durable and float switches and liquid level controls for water and sewage Liquid Level Control Floats
Contactors and Solid State Relays,
Tilt, Tip-over and Proximity Switches
Motion and Shock Sensors.
MDI Mercury Displacement Industries Relays, Contactors, Liquid Level Control Floats, Tilt and Tipover switches
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Relay, Vertical, Liquid Level Control Floats, Tilt and Tipover switches
The MDI Catalog "W"
Look through our 24 page Catalog "W" PDF file, there are 2 different version (the different is compatibility and files size) and has many outlines, how to order pages, general and detailed information for our Relay, Switch and Float lines

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Catalog "W" PDF <-- Acrobat Version 5 and newer (Just under 1MB Compatible with Acrobat Version 5 and newer. This one is the smallest file size)


Catalog "W" PDF <-- Acrobat Version 4 and newer
(1.8MB Compatible with Acrobat Version 4 and newer. If you are using an old version of Acrobat or if your not sure of what version your Acrobat reader is, download this one)

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For Liquid Level Control Floats, Contactors and Solid State Relays, Tilt, and Tipover contact MDI TODAY!

* P. O. Box 710 * 25028 U.S. 12 East * Edwardsburg, Michigan * 49112 *
* PH. (269) 663-8574 * FX. (269) 663-2924 *
* Toll Free US and Canada (800) 634-4077 *