Automation System
A smart solid-state sensor is:

not available today
one that has two or three substrates
one that integrates both logic and a solid-state sensor into one unit.
None of these
All of these

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Automation System
There are several procedures you can implement to provide maximum security. The most important of these is:

Verify the reputation of the people installing your system
run regular simulated tests using TARP (testing of Applications Recovery Planes)
None of these
do not allow unbonded service people to work on your equipment
do not leave training manuals unsecured

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