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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
MDI Outlines


See our drawing in "PDF" or "DXF" format for several of our switches.
Other formats available upon request.


To see our Outline drawings for Switches, Click here

To see our Outline drawings for Relays, Click here

To see our Outline drawings for Floats, Click here

To see our ever growing outline drawings and specsheets page Click here

This page contains all our specsheets and outline drawings we have currently. We will be adding new ones daily, so please check back for that one you really need and you can not find. If you need one now and can not find it here, please Contact us!

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 *