While a small unit like that won't give you much battery run time, it is worth every penny for the line conditioning and surge protection it provides.
2.
But in Russia, only the Mafia and the police carry guns, so it's every man for himself, one more product of hundreds of years of bread-line conditioning.
3.
Power line conditioning and filtering can help deter power-monitoring attacks, although such measures must be used cautiously, since even very small correlations can remain and compromise security.
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