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Digitrax PM42 UPGRADE – PM4 to PM42 Upgrade Kit


MSRP: $9.99


Current PM4 users can upgrade their units for the new features of the PM42 by changing the chip on the board and re-programming the PM42 for their operation. The PM42 gives you 2 additional faster short circuit detection sensitivity settings.

If your existing PM4s are doing what you need them to do, there is no need to upgrade them.


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