Elecbee SP21 Series IP68 Waterproof Connetor 4 pin In-line Female Plug & Male Socket SP21-4 Pins Connector
LH0910 Converts a 4 pin CFL lamp holder/socket to an E26/E27 medium base lamp holder/socket
Amazon.com: CNLINKO 4 Pin Power Industrial Circular Connector, Male Plug & Female Panel Mount Receptacles Socket Jack, Outdoor Waterproof IP67, AC DC : Electronics
Amazon.com: HangTon HE29 4 Pin Connector Waterproof Circular Power Female Cable Plug Male Panel Socket Quick Disconnect, 45 Amp Current High-Voltage : Electronics
OEM Molex type 6 pin female socket (HFSOC) to New style HF 4 pin connector (HF4) | Powerwerx
63A 3P E 4 pin 380 415V IP67 034 three phase watertight industrial plug|plug ngk|ip67 industrial plugip67 - AliExpress
20 Amp 4 Pin Power Plug Connectors Pins High Voltage Cable Connector M20 Led Socket Connector - Buy Led Socket Connector,Cable Connector,20a Power Plug Ip67 M20 Adapter 3 Pin Pbt Power Female