The 1969442-4: It is the free-hanging (in-line) wire-side half of a wire-to-board interconnect system — it mates with a matching through-hole pin header of the same pitch and position count. The housing is molded from natural polyamide (PA) nylon and uses a latch holder for positive retention against vibration.
Contacts Are Ordered Separately
A critical sourcing detail: the 1969442-4 ships as an empty housing only — contacts are not included. You will need to order the matching female crimp socket terminals separately. The housing accepts a female socket contact terminated via crimp, so the wire-side assembly requires both the housing and the loose terminals, plus a compatible hand or automatic crimp tool.
Mating Header and System Compatibility
This plug mates with a 4-position, 2.50mm-pitch through-hole pin header from the same Economy Power 2.5 series. The latch holder on the housing engages the header's locking ramp for a vibration-resistant mate. Because the pitch and position count are fixed, the mating header must also be 4 circuits at 2.50mm pitch — verify the header's circuit count and pitch match before committing the BOM line.