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The KII EMF Meter is a handheld meter from KII Enterprises. It has a push button to activate it and it needs to be held down to monitor the readings. This modification adds a switch to the circuit that produces the same effect as when the button is pressed.

Other possible modifications would be to add an output jack and digital meter to the KII - this is looked at in the details given in the Trifield Natural EM Meter Modification and the technical board on the GRI forum.
K-II output is recorded along with magnetic field, temperature and light intensity.

First introduce the background knowledge of KII Meter. It has 5 indicators that indicate the level of EMF:
Green - Always on, battery is OK, "normal" level is 0 to 1.5 milliGauss
Green - "Low" 1.5 to 2.5 milliGauss
Yellow - "Caution" 2.5 to 10 milliGauss
Orange - "High" 10 to 20 milliGauss
Red - "Warning" 20+ milliGauss

Detected frequencies are 50/60Hz (50-1000Hz - ELF) (1000-20,000Hz - VLF) with an accuracy of 5% (typ.).

What sets the KII apart from many other low-cost meters is that it can measure electromagnetic fields not only in the extremely low frequency (ELF) range, but also in the very low frequency (VLF) range. The ELF range, commonly referred to as between 3-3,000Hz, borders DC and AC.

More expensive meters, such as the Tri-Field Natural EM meters, are designed to operate exclusively in the natural DC range of 0-3Hz (Sub-Extremely Low Frequency - SELF), including the frequencies of humans and the Earth itself.

Operation of the K-II
When the meter is initially turned on, it will give a full-scale reading followed by a half-scale indicating it is powered. It then returns a normal reading with a green LED on - indicating 0-1.5mG. Any disturbance will now be indicated by the meter. If the finger is lifted, a single LED will turn off, indicating that the device is turned off.

The benefits of the modification are obvious and preclude the possibility of human intervention (accidental or otherwise) using the meter's original momentary switch. This intervention can be noticed by the first light (green) that goes out before the "spike" occurs - this single light should always be on, indicating that the device is powered on.

The image below shows the modified and finished switch in place. The modification is fairly self-explanatory, note that the original switch still works as before. Test switches and connection points before soldering into place and make sure no other components are touched when reassembling. As with any such modification, it may void any warranty and care should be taken to ensure proper connections and no damage to other components - basically this is entirely at your own risk. We have modified our K-II (pictured) and it works well, but there is no guarantee that the same attempt will be successful.

The purpose of providing this modification is to allow all groups to improve the quality of the results obtained using the K-II meter. We do ask that if you do find this useful, please provide a link back to this page and give others the same opportunity. More information/discussion can be found on the GRI Forum's Tech Board.