1S03
RUELCO , 1S03, SAND PROBE RELAY , 3" 80 PROBE
A nice touch is the color that makes it easy to see where you applied it.
RUELCO , 1S03-5B13N , SAND PROBE RELAY , 3" SST SCH-80 PROBE
A nice touch from LOTMOVE is the clear labeling on all their packaging.
RUELCO , 1S03-5B44C , SAND PROBE RELAY , 4" CS SCH-40 PROBE
A nice touch here is the alloy steel adjustment knob that turns with precise resistance.