stio 20A 125V Shore Power Inlet with 5-in-1 T-Blade Adapter — 12AWG, Dual 16-inch Cords, Weatherproof

stio's 20A 125V outdoor shore power inlet is a weather-resistant, plug-and-play power entry that combines a 5-in-1 T-blade adapter with dual 16" cords for versatile, heavy-duty electrical connections.

This integrated inlet and outlet box is built for RVs, boats, trailers and outdoor electrical needs where reliable shore power and adaptability matter. It includes a female socket compatible with five common NEMA plug types, heavy 12 AWG wiring, a Y-splitter with two 16-inch leads, and a rubberized snap-fit cover to keep moisture and debris out. The unit installs into a standard 2" hole for a clean, flush fit and requires no complex wiring modifications.

What plugs and voltages does this inlet accept?

The unit ships with a 5-in-1 T-blade adapter on the female side, allowing you to accept NEMA 1-15P, 5-15P, 5-20P, 6-15P and 6-20P plugs. This makes it simple to connect a range of devices and cords without extra adapters.

• Accepts five common NEMA plug types via included adapter
• Compatible with 110–125V systems by default; 6-15/6-20 use requires wide-voltage devices
• One purchase removes the need to carry multiple separate adapters

How durable and weatherproof is the inlet for outdoor use?

stio designed the housing with black nylon plastic and high-quality copper conductors to handle heavy use while resisting corrosion. A pressure-fit rubberized cap snaps over the inlet to keep rain, snow and ice out, maintaining a watertight seal in harsh conditions.

• Durable nylon housing resists UV and impact
• Snap-fit rubber cover provides a watertight seal
• Corrosion-resistant copper wiring for reliable conductivity

What are the power and wiring specs I should know?

The inlet is rated at 20 amps and 125 VAC and uses heavy-duty 12 AWG copper wiring to support maximum current flow. It comes pre-wired with a Y-splitter that gives you two 16-inch leads, expanding hookup options without cutting or splicing cables.

• 20A / 125VAC rating for standard shore power applications
• 12 AWG copper conductors for low-resistance connections
• Y-splitter with dual 16" cords included for added reach

How easy is installation and what mounting does it require?

Installation is designed to be straightforward: the inlet mounts flush into a 2" hole and requires no cable modification or complex hand wiring. That makes it well suited for DIY fitting projects on RVs, boats and small outbuildings.

• Flush mount flange installs into a standard 2" cutout
• Plug-and-play wiring minimizes installation time
• Suitable for retrofit or new installations on many vehicles and structures

Who this is for: stio's 20A 125V inlet is ideal for RVers, boat owners, trailer operators, and anyone who needs a reliable outdoor power entry that handles multiple plug types without extra adapters. It's aimed at users who want a durable, weatherproof solution that installs quickly and expands connection options—useful for camping, marine, work trailers, off-grid setups, and seasonal outdoor power needs.