The Supervisor of Elections shall provide and furnish to the boards removal notices, which they shall cause to be made available for the convenient use of registered electors. These notices shall be printed upon cards suitable for mailing, addressed to the office of the board, and shall contain spaces wherein the elector shall write—(1) the election district and the polling district, with the street or road and number, if any, of his present residence, and the specific location thereof, including the number of the room or rooms, apartment, flat, or floor, if his residence is a portion only of a house; (2) the election district and the polling district, with the street or road, and number, if any, of the address from which he was last registered; (3) the date of his removal to his present residence; and (4) space wherein the elector shall sign his name. The removal notice shall contain a statement that the elector may, by filling out properly and signing a removal notice and returning it to the office of the board of elections of the election district in which he is registered, secure the transfer of his registration to the polling district in which he resides, effective as to elections and primaries occurring at least 30 days after the date of his removal into the new district. Each removal notice shall contain a warning to the elector that the notice will not be accepted as an application for transfer of the elector's registration unless the signature thereon can be identified by the board as the elector's signature in the general and district registers. Each removal notice, to be effective, must be received at the office of the board at least 30 days prior to any primary or election, which warning shall also be contained on the removal notice.