The present invention is an electrode for electrostatic treatment of water in conduit. The memory section includes a test circuit, a data register, a data output section, and a memory core section. The tire pressure indication system provides for a tire pressure indication system that can be easily mounted to the wheel tire assembly without the use of a hubcap or other similar mounting structure. The multiple band electrically small compact planar microstrip antenna also innovatively filters unwanted signals at other frequencies because of the narrowband nature of each band. The packet is marked to indicate possible congestion in the one or more data center networks when the current queue length exceeds the threshold value. The locking holes and slot are positioned near the hydrant locking hole and the collar locking holes are aligned.