Your site has to be readable.

The meters transmit a reading to a router which then is readable online, or emailed on the 1st of the month.

Three places to check would be 1) the RI Landlord Tenant Handbook, which is a human readable version of the actual laws themselves, 2) the Residential Landlord and Tenant Act, and 3) also might be good to check the RI Legal Services Your Rights as a Tenant document.

@Joanna Corona a double close on commercial and multifamily is not really readable unless the end buyer is all cash. 

I did end up finding where it is, however, there was no readable address.

Well you reinforced that I got the deal across, and it is readable, because that is a valid point.

Double check it 5 times for usage, punctuation, grammar and "readability".all cash

ABCs of Real Estate Investing is readable for beginners but I read it to find out what McElroy did while he was building his apartment portfolio from the ground up.

Whatever color and copy you choose, please make sure to make it readable, with dark, thick lines and large print so it can be read at a glance.

The clearly-readable postmark will be your proof that you made a reasonable effort to comply with the law.I don't know how long you have to keep it, but an envelope doesn't take up that much space.