What are the internal dimensions?

There is very little 'internal'; there is a short entry cavity at each end; the center section is solid.

Can this be used in a swimming pool. Would the chlorine water harden up the green grommet and leakage could developed.

I would not use these in a swimming pool application. NEC code is very specific on wiring applications for pools. Suggest you consult an electrician.

Are these suitable for grow lights ?

The documentation states the connectors are rated for up to 400 volts and up to 17.5 amps. Assuming the power for your grow light application is within those specs you should be OK. It's critical that you stay within the specified wire diameter range and strip the wires exactly as the instructions specify in order to attain the specified waterproof rating (IP68).

Will this work with 14-2 romex wire?

You need to use the 14-2 round roam x. Though. The reg isn't round. The wire won't deal with these if they are not round cord

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Junction Box Outdoor 2 Way Waterproof IP68 Electrical Cable Connector,M16 Wire Range(3.5-10mm),Suitable for Repair and Extend Power Cables,UL(5 Pack)

Junction Box Outdoor 2 Way Waterproof IP68 Electrical Cable Connector,M16 Wire Range(3.5-10mm),Suitable for Repair and Extend Power Cables,UL(5 Pack)

Product ID: 194777064

Details

Brand
HFJY
Color
Black
Material
Nylon
Product Dimensions
0.7"D x 2.56"W
Style
ON

💧IP68 waterproof rating for ultimate outdoor protection

🔌2-way M16 connector for versatile wiring

🔥V-0 flame retardant PA66 material, -40°C to 105°C

R$286

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Description

🔧 Power up your outdoor projects with waterproof precision!

VERSATILE OUTDOOR USE - Perfect for garden lights, street lamps, underwater fixtures, and more—extend or repair with confidence.
EFFORTLESS INSTALLATION - Compact, lightweight design lets you secure connections anywhere with just a screwdriver—DIY made professional.
BUILT TO ENDURE EXTREMES - Crafted from flame-retardant PA66 nylon, engineered to withstand -40°C to 105°C environments.
DUAL WAY POWER CONNECTION - Seamlessly connect live & neutral wires with precision-engineered 2-pole M16 design.
UNMATCHED WEATHERPROOFING - IP68-rated sealing keeps moisture, dust, and UV damage at bay—even underwater up to 3.5m.

The HFJY Junction Box Outdoor 2 Way Waterproof Connector is a UL-certified, IP68-rated electrical cable connector designed for reliable, weatherproof connections. Featuring a durable PA66 flame-retardant body and compatibility with 3.5-10mm cables, it ensures safe, easy installation for extending or repairing outdoor power cables across diverse applications.

Specifications

ASIN	B083HRLQG3
Best Sellers Rank	#31,538 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #73 in Electrical Boxes
Brand	HFJY
Brand Name	HFJY
Color	Black
Customer Reviews	4.4 out of 5 stars 134 Reviews
Finish Type	ON
Included Components	ON
Installation Type	Screw-In
Item Dimensions D x W x H	0.7"D x 2.56"W x 0.7"H
Item Weight	0.08 kg
Manufacturer	HFJY
Material	Nylon
Model Number	HFJY-767289086742
Number of Items	5
Part Number	FE-TT01-5TZF
Product Dimensions	0.7"D x 2.56"W x 0.7"H
Specification Met	Ul
Style	ON
UPC	767289086742
Unit Count	5 Count

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R$286

Duties & taxes included

In stock

Sold byAmazon BrazilDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Brazil.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

Sneha T.

Received my product in pristine condition. Great service overall.

1 month ago

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