Are heavier than lead acid batteries.
Have a tendency to create a “memory” when not depleted completely.
Have a much shorter shelf life than other types of batteries.
Are more expensive than other forms of batteries.
The demise of the phone company.
Upgraded fiber optic installations.
The introduction of radio systems.
Nothing. Actually, they are still widely used across the country
A continuous metallic underground water piping system
An iron rod driven six feet down with a resistance of 25 ohms or more
A buried plate with an area of no more than 1 square foot
An electrical outlet grounding screw
Is easier to install.
Utilizes less wiring.
Is easier to dispose.
Is more efficient.
Always make a “service loop” at the point of connection.
Make the connection to a known ground source.
Run it to the closest cold water pipe.
The smaller the wire, the easier it is to fish into the wall.
Require sodium pressure lighting for visibility.
Use IR illumination.
Are considered night time or starlight cameras.
All draw the same power.
Both c. and d.
They all can be integrated.