Four pins in a 16mm shell. The LP16 4-Pin Hybrid Metal waterproof connector gives you two extra lines over the standard 2-pin without changing the footprint. Power plus signal on one cable. Or two circuits with independent grounds. The hybrid metal-plastic shell takes impacts that crack plastic, and the plastic body keeps the weight down. IP68 sealing handles submersion at 2 meters for 24 hours.

Three-pin connectors solve the ground problem. Four pins let you separate two circuits — for example, a sensor line and a power line in the same cable run. The LP16 4-Pin Hybrid Metal Waterproof Connector handles that in a shell that's the same size as our 2-pin version. The trade-off is pin density inside the shell, not external footprint. That means it fits into the same cutouts and brackets.
The hybrid shell is a compromise we're comfortable defending. All-metal would add cost and weight without a real benefit at 10A. All-plastic would crack if you dropped it on concrete. The hybrid uses zinc alloy where the coupling thread takes the wear, and engineering plastic everywhere else.
IP68 at 2 meters for 24 hours. Tested on every batch. Cable entry takes 1 to 1.5mm² (16 AWG) wire with a 7–9mm outer diameter. The silicone seal does the wet side. The keyway keeps all four pins going in the right orientation — no guessing during installation. We've seen these on outdoor camera arrays with dual power/signal lines, industrial sensor clusters, and medical cart wiring where four lines have to reach one small housing.

|
Pin Count |
4-Pin |
Protection Rating |
IP68 (when mated) |
|
Rated Current |
10A |
Housing Material |
Zinc Alloy + Engineering Plastic |
|
Rated Voltage |
400V |
Contact Material |
Gold-plated Copper Alloy |
|
Withstand Voltage |
2000V AC |
Cable Range |
1 - 1.5mm² (16 AWG) |
|
Contact Resistance |
< 5.0 mΩ |
Cable O.D. |
Φ7 - 9mm |
|
Insulation Resistance |
≥ 500 MΩ |
Assembly Type |
Soldering |
|
Temperature Range |
-40℃ to +85℃ |
Four-line runs in small gear. Outdoor camera arrays with dual power and signal lines. Industrial sensor clusters. Medical cart wiring. Portable test instruments. Agricultural equipment controls. LED lighting fixtures with dimming lines. Anywhere you've got four lines going into small gear that gets wet — and that's where the LP16 4-Pin Hybrid Metal Waterproof Connector ends up.
Every batch gets a dielectric test and a waterproof check. Solder joints get pull-tested, not just eyeballed. It costs us time. It saves you callbacks.
The LP16 series carries TUV, CE, and RoHS. We run ISO9001:2015, so material sourcing is consistent and production records are traceable. And the quality system actually gets audited — not just claimed.

Quick Questions We Get Asked
Q: Why four pins instead of two?
A: Dual circuits. Power plus signal on one cable, or two independent lines with separate grounds. Same 16mm footprint as the 2-pin version, just denser inside.
Q: What cable size does it take?
A: 1 to 1.5mm² (16 AWG) with a 7 to 9mm outer diameter. Light power and signal class.
Q: Can it stay submerged?
A: Yes. IP68 covers continuous immersion. We test at 2 meters for 24 hours.
Q: Why hybrid instead of all-metal?
A: Cost and weight. At 10A per pin, all-metal is overkill unless the environment is genuinely brutal. The hybrid gives you the durable coupling thread and drops the rest.

For specs, custom pin counts, or samples of the LP16 4-Pin Hybrid Metal Waterproof Connector, email nick@cableinco.com. Tell us your cable size and layout — we'll confirm the build.