stio 20A 125V RV Shore Power Inlet Plug with 5-in-1 Adapter, Dual 16" Cords, Weather-Resistant

The stio 20A 125V AC shore power inlet is a heavy-duty, weather-resistant outdoor power inlet that includes a 5-in-1 T-blade adapter and dual 16" cords for flexible, dependable RV and marine power connections.

This integrated inlet box combines a 20-amp, 125-volt rated receptacle with a multi-adapter female side, a Y-split dual cord design, and a sealed rubber cover so you can connect shore power in varied outdoor environments. Built with 12 AWG copper wiring and durable nylon housing, it’s designed to be a plug-and-play flush-mount solution for RVs, boats, trailers, cabins and other outdoor electrical applications.

How does the 5-in-1 adapter expand compatibility?

The built-in female adapter accepts five common plug styles—covering NEMA 1-15P, 5-15P, 5-20P, 6-15P and 6-20P—so one inlet can serve multiple plug standards without swapping hardware. That flexibility helps when traveling between campgrounds, marinas, or work sites with different power pedestals.

• Supports five plug types on one female adapter for broader compatibility.
• Allows connection of common household and specialty shore power plugs.
• Works with devices rated for 110–250V when using 6-15 or 6-20 plugs; verify device voltage range.

What makes the inlet weather resistant and suitable for outdoor use?

The unit ships with a pressure-fit rubberized cover and snap-fit watertight cap that shields the inlet from rain, snow and freezing conditions. The housing uses UV-resistant nylon and sealed entry points to reduce water ingress and corrosion risks, extending service life in harsh climates.

• Rubberized cover provides a tight seal against precipitation and debris.
• Snap-fit watertight cap protects the T-blade adapter when not in use.
• Durable nylon housing resists UV damage and outdoor wear.

How does the dual 16" cord design improve installation and use?

The inlet features a Y-split configuration with two 16-inch cords to give more reach and flexible routing to the power source. This design allows one cord to attach directly to shore power while the other can feed an auxiliary device or provide extra length to match varying pedestal locations.

• Dual 16" cords provide extra reach and placement options during hookup.
• Y splitter enables simultaneous connections or easier cord management.
• 12 AWG copper wiring supports 20 amps of continuous current safely.

How simple is installation and what mounting details should I know?

The inlet is designed for flush-mount installation into a 2-inch hole and requires no hand wiring or cable modifications for most setups, making it a fast plug-and-play upgrade. The flanged faceplate provides a neat, secure fit and keeps the inlet accessible while mounted on RV walls, boats, sheds, or trailers.

• Flush-mount flanged design fits a 2" hole for tidy installation.
• No hand wiring needed in many cases—designed for plug-and-play use.
• Includes heavy-duty connectors and pre-attached 12 AWG wiring for reliable conductivity.

Who is this for: The stio 20A 125V inlet is aimed at RV owners, boaters, trailer and camper users, off-grid cabin or shed owners, and tradespeople who need a rugged outdoor power inlet that covers multiple plug standards. It’s ideal for anyone seeking a weather-resistant, easy-to-install shore power inlet with extra cord length and broad compatibility for travel, marine, and utility environments.