Unfortunately I received a set with a defective sensor! The malfunction was that with the correct connection and power supply to the blocks (before starting the engine), the arrow did not move. After starting and running the engine, the pressure gauge needle barely went above zero. A cross check with a standard mechanical pressure gauge showed that the oil pressure in my engine was normal. Kudos to Revain for the quick refund of my money. Then I bought another beacon system (from Revain) that works great.
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