When you're choosing control cables and connectors for an industrial I/O setup, the right connection type is rarely about one product being better overall. It's about matching the connector to the cable and the environment. The CNLINKO Circular Ethernet Industrial Connector RJ45 Male Plug Outdoor Waterproof and the Arlington Industries 38AST 3/8-inch Snap2 IT Connector Lot of 50 sit on opposite sides of that decision: one is a single weatherproof Ethernet plug, the other is a bulk supply of snap-in conduit connectors. Here's how to pick between them.
Quick verdict
Choose the CNLINKO RJ45 plug when you need a weather-resistant Ethernet connection for outdoor use, backed by IP67-rated protection against water and dust. Choose the Arlington 38AST Snap2 IT Connector when you need a 50-pack of snap-in fittings for MC/HCF or AC/HCF cable and want tool-free installation. The price spread is $42.77, but the more meaningful difference is the connector type and the quantity.
Comparison table
| Product | Listed price | What it is | Best for |
|---|---|---|---|
| CNLINKO Circular Ethernet Industrial Connector RJ45 Male Plug Outdoor Waterproof | USD 9.49 | Single waterproof RJ45 male plug | Outdoor Ethernet/network cable terminations |
| Arlington Industries 38AST 3/8-inch Snap2 IT Connector Lot of 50 | USD 52.26 | 50-pack of snap-in conduit cable connectors with insulated throat | MC/HCF or AC/HCF cable connections to boxes |
Where each product wins
The CNLINKO wins when the job centers on a single outdoor network connection. It's a circular RJ45 male plug built for plug/unplug use, with ABS and zinc construction and UL, CE, and RoHS certifications. Its -40°C to 80°C operating range makes it a strong fit for environments where temperature swings are a concern. The Arlington wins when you're running multiple cables and need speed. The Snap2 IT design lets you snap cable into the fitting, snap the fitting into the box, and loosen the top screw to remove cable.
Product notes
#### CNLINKO Circular Ethernet Industrial Connector RJ45 Male Plug Outdoor Waterproof
Reach for the CNLINKO when your network cable has to pass through a space where moisture and dust are a concern. The IP67 rating is the main reason to choose it, and the ABS and zinc body suits outdoor conditions. The connector is designed for straightforward plug/unplug operation, which is handy when you need to disconnect and reconnect at the cable end. UL, CE, and RoHS certifications add peace of mind for industrial use. On the other side, this is a single male plug, so you're buying one connector rather than a pack. It is purpose-built for RJ45/network terminations, not for conduit or metal-clad cable. If you have several outdoor Ethernet drops, you'll need one connector for each drop.
#### Arlington Industries 38AST 3/8-inch Snap2 IT Connector Lot of 50
If your job involves running metal-clad cable into electrical boxes, the Arlington lot is built for that. The Snap2 IT connectors accept cable ranges from .405 to .612 and have an insulated throat, which helps the cable feed cleanly into the fitting. The no-tools installation is the standout reason to choose it: you can snap the cable into place, snap the connector into the box, and loosen the top screw to remove it. This is a practical bulk option when you have multiple boxes to wire. The limitation is that it's a 3/8-inch conduit connector, not an Ethernet plug, so it won't solve an outdoor network cable termination. Match it to your metal-clad cable runs and its bulk lot format becomes a clear advantage.
Final choice by use case
If your connection point is an outdoor Ethernet cable that needs protection from water and dust, the CNLINKO Circular Ethernet Industrial Connector RJ45 Male Plug Outdoor Waterproof is the right call. If you are wiring multiple boxes with metal-clad cable and want a large quantity of tool-free connectors, the Arlington 38AST Snap2 IT Connector Lot of 50 is the better fit. Let the cable type and environment decide: network cable outdoors points to CNLINKO, conduit cable to a box points to Arlington.
