The Stetzerizer Filter has High Frequency Electromagnetic Pollution Filters that are used to protect you from the diseases like headache, short term memory, fatigue, depression, nausea, rashes, irritability or even chronic fatigue syndrome caused by the EMF Pollution that is carried in the wirings. Even the high frequency EMF Pollution produced by the common household items such as electric motors, loose wires, fluorescent lights, transformers and dimmer switches is also restricted by this device. The pollution can be checked with the Microsurge Meter that starts working when it is plugged in an electrical outlet. The meter is designed to measure only the high frequency levels that may exist in your electrical wiring. The Filters can remove 50 to 60 Hz signal. The product contains EMF high frequency suppressors that can reduce the high frequency EMF pollution from your environment. The device starts working when it is plugged in any electrical outlet distributed in home or office.