The glass-filled PBT cavity walls hold the terminal with the standard Micro Quadlok primary lock. No secondary TPA (terminal position assurance) is listed for this housing, so the terminal insertion feel and the audible click of the primary latch are the confirmation of full seat.
It is RoHS compliant, clearing the regulatory gate for EU and RoHS-restricted markets. No official cross-reference or direct second-source is recorded; the closest functional peer within the TE portfolio is the 1-1703532-1, a 2-position sealed variant in the same Micro Quadlok family, but it is not a position-for-position swap.