combines the physical environment and sociology issues that sourround it to reduce crime rates and fear of crime.
Can cause power noise - a disturbance of power - electromagnetic Internference - radio frequency interference
EMI- lightning, motors. and current difference between wires
RFI - electrical system mechanisms, flourescent lighting, and electrical cables
Power transient noice
disturbance imposed ona power line that causes elecrical interference.
condition the line to keep voltage steady and clean
A -Common combustibles- suppression: water, foam
B - liquid, petroleum products, Gas, CO2, foam dry powerders
C - Elecrical Suppresion: Gas, CO2, foam dry powe
D. Combustible Metals - Suppression: Dry powder
Electrostatic IDS - creates an electrostatic field balanced between the itself and the object being monitored. If an intruder comes within a certain range of the monitored object there is capacitance change.