20A 125V AC Port Plug,12AWG Heavy-Duty RV Shore Power Inlet

The stio 20A 125V heavy-duty shore power inlet plug is a weather-resistant, plug-and-play outdoor power inlet that includes a 5-in-1 T-blade adapter and a 16" 12AWG extension cord for RVs, boats, trailers, and outdoor gear.

This integrated inlet outlet box is engineered to bring reliable shore power to recreational vehicles, boats, trailers, and outdoor buildings without complicated wiring. Constructed with durable copper contacts and reinforced black nylon housing, the unit accepts multiple plug types via a female-side 5-in-1 adapter so you can connect a wide range of cords at campsites, marinas, or temporary job sites. The watertight, pressure-fit rubber cover and snap-fit cap protect the connection from rain, snow, and splashes, while the 16" 12 AWG cord provides ready-made reach to nearby power sources.

What plug types does this inlet support and how flexible is it?

This inlet comes with a female-side 5-in-1 adapter compatible with NEMA 1-15P, 5-15P, 5-20P, 6-15P and 6-20P plugs. That lets you connect household and specialty cords without buying separate adapters, though devices must accept the voltage if you use 6-15 or 6-20 connectors.

• Includes adapters for common 2- and 3-prong plugs and 6-series connectors
• One purchase covers most campsite and garage power needs
• NOTE: Use only with equipment rated for the plugged voltage

How rugged and weatherproof is the inlet for outdoor use?

The enclosure is built from impact-resistant black nylon and heavy-gauge copper contacts, and the inlet features a pressure-fit rubberized cover and snap-fit watertight cap to keep moisture and debris out. This combination gives dependable performance in rain, snow, and freezing conditions when mounted properly.

• Rubberized cover protects against water, dust, and corrosion
• Durable 12 AWG copper wiring for improved conductivity
• Designed to withstand outdoor exposure when installed in a 2" hole

How easy is installation and what mounting requirements are there?

Installation is plug-and-play—no hand-wiring is required. The flush-mount flanged inlet drops into a 2-inch hole and secures with the included flange, making it straightforward to retrofit RVs, boats, trailers, or small buildings.

• Requires a 2" cutout for flush mounting
• Comes pre-wired with a 16" 12 AWG cord for quick connection
• Eliminates the need for field splicing or complex electrical work

What applications and vehicles is this inlet best suited for?

The multi-scene design supports RVs, campers, boats, trailers, utility vehicles, and outdoor structures like sheds and cabins. Its combination of adapters and a short extension cord makes it especially useful where flexible plug compatibility and a simple, weatherproof connection are needed.

• Ideal for RV shore power, boat shore connections, and trailer hookups
• Useful for golf carts, jeeps, trucks, and outdoor power tasks
• Good choice for seasonal buildings, workshops, and remote power points

Who is this for: The stio 20A 125V inlet plug is aimed at RV owners, boaters, trailer operators, and DIY installers who want a dependable, easy-to-install shore power inlet with broad plug compatibility. If you need a weather-resistant, ready-to-mount power inlet that reduces adapter clutter and avoids on-site wiring, this product delivers a practical, versatile solution.