standard circular connector, 3-2172093-2, TE Connectivity
Product Type: Connector, Connector System: Wire-to-Board, Sealable: Yes, Circular Connector Type: Plug, Shell Type: Metal, Number of Positions: 4, Number of Power Positions: 0, Number of Signal Positions: 4, Contacts Preloaded: Yes, EMI & RFI Protection & Suppression Type: Shielding, Shell Plating Material: Nickel, Shell Base Material: Zinc Alloy, Circular Connector Insulation Material Type: Polyamide, Contact Current Rating (Max): 3 A, Reverse Gender: Yes, Contact Layout Arrangement: Circular, Circular Connector Contact Type: Pin, Connector Mounting Type: Panel Mount, Polarization Code: A, Mating Alignment Type: Keyed, Mating Retention: With, Circular Connector Shell Size: 12, IP Dust Sealing Level: 6, Operating Temperature Range: -40 – 80 °C, Circuit Application: Signal, Shielded: Yes