Tiny relay by Nais/Panasonic type AGN200A4H features a 4.5VDC coil and DPDT 1Amp 30VDC contacts. Coil impedance is 145Ω. Size of relay is 0.22" x 0.41" x 0.35" high. Leads have been bent over for SMD mounting but you can simply bend them back for through hole mounting.
Sold in a package of 10.