A nice touch is the clear pinout on this General Purpose Relay, which up bench testing noticeably.
NTE Electronics R22-5D16-24 Relay-SPDT 16Amp 24VDC PC Board Mount Slimline
What stands out about the General Purpose Relay is how easily it connects in both AC and DC circuits.
You will find that installing a General Purpose Relay does not require special tools in most hobby projects.