The TRAKTRONIX relay I installed felt sturdy and showed clear markings for easy wiring.
Electromatic SC 185 024 S-System Recycler. OFF 0.5-10s., ON 3-60s. 24VAC
You'll notice the LRD logo on the relay, which gives a sense of trust without shouting about it.
You will find that the economizer makes the relay more efficient in everyday use.