PM4 up-grade chip:
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.
MSRP is $9.99.
This product was added to our catalog on Wednesday 20 June, 2007.