---
product_id: 154051324
title: "Waterproof IP68 External Junction Box, 2 Way Plug Line M20 Coaxial Cable Conn..."
brand: "helunsi"
price: "VT3912"
currency: VUV
in_stock: true
reviews_count: 13
category: "Helunsi"
url: https://www.desertcart.vu/products/154051324-waterproof-ip68-external-junction-box-2-way-plug-line-m20
store_origin: VU
region: Vanuatu
---

# Supports up to 450V/24A power IP68 Waterproof rating Easy screw-in installation Waterproof IP68 External Junction Box, 2 Way Plug Line M20 Coaxial Cable Conn...

**Brand:** helunsi
**Price:** VT3912
**Availability:** ✅ In Stock

## Summary

> 💼 Secure your outdoor power like a pro — weatherproof, durable, and ready for anything!

## Quick Answers

- **What is this?** Waterproof IP68 External Junction Box, 2 Way Plug Line M20 Coaxial Cable Conn... by helunsi
- **How much does it cost?** VT3912 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.vu](https://www.desertcart.vu/products/154051324-waterproof-ip68-external-junction-box-2-way-plug-line-m20)

## Best For

- helunsi enthusiasts

## Why This Product

- Trusted helunsi brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Built to Endure:** Premium PC housing with silicone seals resists UV, corrosion, and extreme temperatures for years of reliable use.
- • **Effortless Setup:** Screw-in design with detachable cover and adjustable cable glands ensures a secure, hassle-free installation.
- • **Multi-Environment Ready:** Perfect for underground, garden, solar, irrigation, and outdoor lighting applications—protect your tech anywhere.
- • **Ultimate Weatherproof Shield:** IP68 rating guarantees dust-tight, water-submersion protection for your outdoor connections.
- • **Versatile Cable Compatibility:** Accommodates cables from 5 to 15mm, fitting a wide range of outdoor electrical and coaxial wiring needs.

## Overview

The Helunsi Waterproof IP68 External Junction Box is a robust, weatherproof enclosure designed for protecting outdoor electrical and coaxial cable connections. Featuring a high-grade PC housing and silicone seals, it offers superior resistance to water, dust, UV rays, and temperature extremes. Compatible with cable sizes from 5 to 15mm and supporting up to 450V/24A, this 2-way junction box is easy to install with a screw-in design and comes with mounting hardware. Ideal for outdoor lighting, irrigation, solar setups, and underground wiring, it ensures your connections stay safe and reliable in any environment.

## Description

Helunsi Waterproof IP68 External Junction Box, 2 Way Outdoor Junction Box, Underground Plug Line Coaxial Cable Connector Wire Range 5 to 15mm Electrical Power Cord Weatherproof Junction Boxes - Black - desertcart.com

Review: Waterproof IP68 External Junction Box - This Waterproof IP68 External Junction Box (2-way, for 5-15mm cables, black) worked perfectly for me to fix a poorly made audio cable connection. It completely solved my problem with the pool audio. Pros: * IP68 Waterproofing: Absolutely essential for outdoor use and in damp environments like by the pool. It ensures the connections are protected from water and dust, which is crucial for both durability and safety. * Ease of Use: Installation was simple and straightforward. I was easily able to house the problematic audio connection inside the box, ensuring a secure isolation. * Effective Problem Solver: The box delivered exactly what it promised, effectively resolving the audio interruption I was experiencing due to an exposed and poorly made connection. My pool audio is now working flawlessly. * Robust Construction: The box appears to be made from a strong and durable material, which inspires confidence in its longevity, even under adverse weather conditions. * Versatility: The wire range (5 to 15mm) is quite flexible, allowing for use with a variety of cables, which is a plus for different applications. Conclusion: For anyone looking for an effective and durable solution to protect electrical or audio connections in outdoor environments, especially in damp or weather-exposed locations, the IP68 Waterproof External Junction Box is an excellent choice. In my case, it completely resolved my pool audio issue, and I highly recommend it.
Review: Nice weatherproof junction box - Very nice product. Perfect for hooking up side lights on my utility trailer

## Features

- IP68 Waterproof >>> The Helunsi outdoor junction box is of IP68 high-level waterproof class, weatherproof, moisture-proof, dust-proof and anti-UV, making it safe to use in the sun, wet environment, rainy or snowy days, provides total protection for your junction cables.
- High-Quality Materials >>> 2 way junction box has good waterproof performance, with high quality plastic PC housing and waterproof silicone seal, which will not crack or fade in harsh environment, corrosion and high temperature resistant, durable for years use.
- Specification >>> Pack of 1. Internal dimensions: L 2.83 x W 1.89 x H 1.26inch. External dimensions: L 5.31 x W 2.72 x H 1.38inch. One input and one output, conduit cable gland is equipped with 3 sets of silicone seals of different thicknesses, applicable cable size range: imperial units 3/16" to 11/32", 11/32" to 15/32", 15/32" to 19/32" (Metric units 5-9mm/9-12mm/12-15mm). Comes with 3 screw terminal connector and mounting kit. Maximum voltage: AC 450V. Maximum current: 24A.
- Easy to Install >>> It can be installed under the ground or on the wall, horizontally or vertically as indoor or outdoor junction box, tightening the exterior screws with a screwdriver for a complete seal. Design for detachable box and cover, the waterproof silicone layer is precise and tight, by rotating and tightening the cable gland nut at both ends can lock and seal the cable.
- Wide Usage >>> Our Helunsi junction box can protect the connections of outdoor electrical appliances and wiring, which is suitable for external lighting facilities requiring waterproof or weatherproof protection, street lights, irrigation machine, solar equipment, outdoor LED display, garden lights, outdoor flood lights, landscape lights, underground electrical and more.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07TFSLLBY |
| Best Sellers Rank | #46,304 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #116 in Electrical Boxes |
| Brand Name | Helunsi |
| Color | Black-1pcs |
| Customer Reviews | 4.4 4.4 out of 5 stars (844) |
| Finish Type | PC housing |
| Included Components | 1 x electrical junction box |
| Installation Type | Screw-In |
| Item Dimensions D x W x H | 5.31"D x 2.72"W x 1.38"H |
| Manufacturer | Helunsi |
| Material | Plastic |
| Model Number | outdoor junction box |
| Part Number | AST003 |
| Specification Met | Ip68 |
| Style | waterproof ip68 external junction box |
| Unit Count | 1.0 Count |

## Product Details

- **Brand:** Helunsi
- **Color:** Black-1pcs
- **Material:** Plastic
- **Product Dimensions:** 5.31"D x 2.72"W x 1.38"H
- **Style:** waterproof ip68 external junction box

## Images

![Waterproof IP68 External Junction Box, 2 Way Plug Line M20 Coaxial Cable Conn... - Image 1](https://m.media-amazon.com/images/I/61v6m489KkL.jpg)

## Available Options

This product comes in different **Color** options.

## Questions & Answers

**Q: What are the approximate internal dimensions of the box?**
A: Dear buyer, the internal size of this box is probably (length: 2.75in wide: 1.96in high: 0.98in), I hope this answer can help you.

**Q: Could i use this box to enclose a small electric fence charger**
A: I've never seen an electric fence charger small enough to fit in this box. I have property with a number of pastures and we use portable electric fences from time to time but the smallest of these chargers are far too large. You couldn't fit a deck of cards into this box. However, there are plenty of larger water-proof enclosures around and there are portable fence chargers that are waterproof.

**Q: What are the product exterior dimensions? not the "package" dimensions. please specify in lxwxh. thanks!**
A: Dear customer
Hello, thank you for your question. 
The internal dimensions of our waterproof box: L = 71mm / 2.8in; W = 49mm / 1.9in; H = 30mm / 1.18in, the external dimensions L = 125mm / 4.9in; W = 69mm / 2.72in. For detailed product dimensions, please see our 8th picture.
Hope our answer can help you, thank you for coming.

**Q: What type plastic is it made of?**
A: Dear Customer, Helunsi waterproof external junction box are made of PC(Polycarbonate) plastic.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Waterproof IP68 External Junction Box
*by A***R on July 20, 2025*

This Waterproof IP68 External Junction Box (2-way, for 5-15mm cables, black) worked perfectly for me to fix a poorly made audio cable connection. It completely solved my problem with the pool audio. Pros: * IP68 Waterproofing: Absolutely essential for outdoor use and in damp environments like by the pool. It ensures the connections are protected from water and dust, which is crucial for both durability and safety. * Ease of Use: Installation was simple and straightforward. I was easily able to house the problematic audio connection inside the box, ensuring a secure isolation. * Effective Problem Solver: The box delivered exactly what it promised, effectively resolving the audio interruption I was experiencing due to an exposed and poorly made connection. My pool audio is now working flawlessly. * Robust Construction: The box appears to be made from a strong and durable material, which inspires confidence in its longevity, even under adverse weather conditions. * Versatility: The wire range (5 to 15mm) is quite flexible, allowing for use with a variety of cables, which is a plus for different applications. Conclusion: For anyone looking for an effective and durable solution to protect electrical or audio connections in outdoor environments, especially in damp or weather-exposed locations, the IP68 Waterproof External Junction Box is an excellent choice. In my case, it completely resolved my pool audio issue, and I highly recommend it.

### ⭐⭐⭐⭐⭐ Nice weatherproof junction box
*by P***D on March 24, 2026*

Very nice product. Perfect for hooking up side lights on my utility trailer

### ⭐⭐⭐⭐ Fantastic Except For Screws Supplied!
*by W***D on June 22, 2023*

Needed a waterproof junction box for our fountain pump connection. Everything about this unit is excellent except for the screws to mount top plate. I used 4 different philip head screwdrivers and all slipped on screw heads! Adapters for wiring were easy to install - didn't use the wiring block supplied [used Wago connectors]. Had the screws been better this would have been a 5 star review - I got around this issue and junction box works very well.

## Frequently Bought Together

- Helunsi Waterproof IP68 External Junction Box, 2 Way Outdoor Junction Box, Underground Plug Line Coaxial Cable Connector Wire Range 5 to 15mm Electrical Power Cord Weatherproof Junction Boxes - Black
- Helunsi Waterproof Junction Box 3 Way, IP68 External Waterproof Electrical Junction Box, Black Underground Junction Box Outdoor Cable Connector, for Diameter 5mm -14mm Wire Gland (1 Pack - Larger)
- Junction Box Outdoor Waterproof IP68, 2Way M20, Electrical Boxes Extension Cord Repair kit Coaxial Underground Cable Connector 2PCS

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*Product available on Desertcart Vanuatu*
*Store origin: VU*
*Last updated: 2026-05-05*