The Smart Guard™ is a Shield that is applied to any electric/water or gas box that contains a Smart Meter. The Smart Guard Shield™ is made from a non-toxic plant based resin using nano crystalline technology and is embedded & encoded with over 230 resonant frequencies that harmonize the hazardous Radio Frequencies which are pulsating from the Smart Meter. The Smart Guard Shield™ is approx. 1¼ inches round and ¼ of inch in height which makes it compact and very simple to attach to any smart meter with its small Velcro dot. We recommend that you attach the Shield underneath the outside electric box where the smart meter is located. We cannot guarantee this product against extreme weather conditions so attaching it to a sheltered area of the meter is highly recommended.