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SPSI is updating our online customer experience.
Online orders will be unavailable 1/8-1/9.

Please call Customer Service at
800-876-7774 to place an order.

Due to rising shipping costs, a small shipping increase will begin 1/12/26.

Thank you for your continued business and understanding.
Online orders unavailable until 1/11/26
Call 800-876-7774 to order.

Shipping increase begins 1/12/26.

MHM PARTS

SPSI has a number of MHM parts in stock at the Corporate office. If you need a part that isn't listed on our website, contact: parts@spsi.com   

Note:  Please note all equipment parts must be paid by credit card only.

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  • MHM Main Switch Controller SP4000 MHM

    MHM Main Switch Controller SP4000

    $122.98

    MHM Main Switch Controller SP4000 We highly recommend with some of the parts that you check with our technical service department before purchasing...

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    $122.98