Souriau Sunbank by Eaton, SMS Female Connector Housing, 4 Way, 1 Row

SMS series quick mating cable mount receptacle housings with a compact design and 'push to mate' and 'press & release to unmate' interconnection system that enables quick assembly and installation without the need for any additional hardware. These SMS series quick mating cable mount receptacle connectors also feature positive polarization keys to prevent mismating, discrimination cavities in beween the contact cavities and integrated strain relief hoods that can accept a wide range of cables.
Available from 2 position to 36 position, these SMS series quick mating cable connectors use size 16 TRIM TRIO 1.6mm diameter snap-lock pin and socket contacts which need to be purchased separately (see stock number 687-6364 typically)
For mating connectors see SMS series quick mating cable mount plug housings

Souriau SMS Series Quick Mating Wire to Board Connectors