How are Access Control, intrusion systems and cctv systems an integral part of society with regards to security and safety?
All dry chemical fire extinguishers have a dial that indicates if it is charged. If you have a foam type, same deal. I have not seen a liquid one in a long time. If you do, its time to get a new one.
I think the Skull Crushers or any other type of Skullcandy headphone would work.
what brand 100 is a fair price if a good brand
