It doesn’t.

EMF cores are wound nanocrystalline alloys which add Impedance above 40kHz.
Perfect for smart meter filtering.
Reliability

EMF cores placed around cables attentuate above 20kHz, smart meters transmit around 70kHz. https://www.3phi-reliability.com/blog/stop-bearing-fluting-currents-at-the-source

How does a cover over front of meter stop radiation from coming through bedroom wall.

I appreciate your work here. However, I am concerned that you may not quite understand the way this works (entirely). The only way to really protect yourself is to demand that you have an analog meter reinstalled/ ask for the opt out program (several states have them now). Radiation emitting from these ‘smart meters’ is not just coming directly from the face of the meter but it is traveling on the air. Whilst the RF transmission is pulsing; the exposure to (ionizing radiation) is possible because the meter is alternating between frequencies. If the meter pulses say every 20 seconds; it is pulsing approximately 22,000 times a day. This is every bit as much to do with long-term over exposure– this is attached to your home and on 24/7. Radiation doesn’t just dissipate; it builds over time. We are being assaulted on a daily basis in this ocean of RF/EMF waves all around us.
These waves can go through materials. Such as; your walls, your ceiling, your floors, your windows, the wiring. Do you see the problem?

Certainly there are ways to help to mitigate the exposure you are subjected to. But, the only way to stop it from emitting is removal. Then, you should try to find out how far you are from your neighbor’s smart meter. There are other devices of course emitting. If you have a microwave, I would stop using it. I would think about switching cell phones if you can (to a dumb model) I’d switch to hard-wired intranet. There are other ways to mitigate. I’d go to stopsmartmeters.org. Never before in human history have we been put into this life altering predicament. The scary thing is that this is not slowing, this is only accelerating.

Hi Sienna. I recently just discovered 30 smart meters on the side of my garage. I too, wasn’t informed of the smart meters until I signed the lease agreement. I just ordered my RF device to measure the frequency. I am curious, were you able to resolve your issue? If so, any advice or tips that worked for you? How did your landlord respond?