ssaahemifan said

I was using the $6 radio shack IVR as outlined in MA for a long time.

Couple of gagues were a bit low, and slower to respond but the tradeoff's were worth it at the time

I've since switched it out to a RTE unit - with much better performance.

I hated to spend the extra $$ BUT once I realized that if there was a loss of ground with the Radio Shack version that it will default to 12V I didn't want the risk of fried guages.

something to consider.......

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