Search  for anything...

Helunsi IP68 Waterproof External Junction Box, 2 Way Outdoor Junction Box

  • Based on 871 reviews
Condition: New
Checking for the best price...
$15.99 Why this price?
Save $2.99 was $18.98

Buy Now, Pay Later


As low as $3 / mo
  • – 4-month term
  • – No impact on credit to apply
  • – Instant approval decision
  • – Secure and straightforward checkout

Ready to go? Add this product to your cart and select a plan during checkout.

Payment plans are offered through our trusted finance partners Klarna, Affirm, Afterpay, Zip, Apple Pay, and Google Pay. No-credit-needed leasing options through Acima may also be available at checkout.

Learn more about financing & leasing here.

Selected Option

Free shipping on this product

FREE 30-day refund/replacement

To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.

To initiate a return, please visit our Returns Center.

View our full returns policy here.


Availability: 15 left in stock
Fulfilled by Amazon

Arrives Saturday, Sep 19
Order within 13 hours and 41 minutes
Available payment plans shown during checkout

Protection Plan Protect Your Purchase
Checking for protection plans...

Color: Black-2pcs


Features

  • IP68 Waterproof >>> The Helunsi outdoor junction box boasts an IP68 high-level waterproof rating, delivering superior weatherproof, moisture-proof, dust-proof, and anti-UV performance. As a reliable outdoor junction box, it is safe for use in direct sunlight, wet environments, rain, or snow, providing full protection for your connected cables.
  • High-Quality Materials >>> This waterproof electrical junction box features excellent sealing performance with a high-quality PC plastic housing and a waterproof silicone gasket. It will not crack or fade in harsh environments. Highly corrosion- and high-temperature-resistant, this durable electrical junction box is built for years of reliable use.
  • Specification >>> Pack of 2. Internal dimensions: L 2.83 x W 1.89 x H 1.26 in. External dimensions: L 5.31 x W 2.72 x H 1.38 in. This 2-way junction box features one input and one output. The conduit cable gland includes 3 sets of silicone seals of different thicknesses, with an applicable cable size range of: 3/16" to 11/32", 11/32" to 15/32", 15/32" to 19/32" (5-9mm / 9-12mm / 12-15mm). Comes with 3 screw terminal connectors and a mounting kit. Maximum voltage: AC 450V. Maximum current: 24A.
  • Easy to Install >>> This underground electrical junction box can be installed underground or on the wall, horizontally or vertically, serving as both an indoor and outdoor junction box. Tighten the exterior screws with a screwdriver to achieve a complete seal. It comes with a detachable cover, and the waterproof silicone gasket ensures a precise fit. By rotating and tightening the cable gland nuts at both ends, you can securely lock and seal the cables in this waterproof cable box.
  • Wide Applications >>> Our Helunsi IP68 waterproof external junction box will protect connections for outdoor electrical appliances and wiring. It is suitable for external lighting facilities requiring weatherproof protection, such as street lights, irrigation systems, solar equipment, outdoor LED displays, garden lights, flood lights, landscape lights, pool light wiring assemblies, underground junction box wiring, and more.

Description

Imperial Units: 3/16 to 11/32inch, 11/32 to 15/32inch, 15/32 to 19/32inch Metric Units: 5 - 9mm, 9 - 12mm, 12 - 15mm Material: Plastic Color: Black Junction Box: 2 Way Maximum Voltage: 450V Maximum Current: 24A Waterproof level: IP68 The outdoor junction box is IP68 advanced waterproof grade, which is not only weatherproof, moisture-proof, but also dustproof and UV-proof. With IP68 protection rating level, it can be installed horizontally or vertically as external junction box to make the connection more convenient, and no tools, no welding or cable cutting required, simplely connect the same type of wire together, more convenient and safer. Suitable for cables of various diameters, choose the sealing silicone ring according to your needs. As an indoor and outdoor external junction box, it is often used for electrical equipment that requires waterproof wiring. This junction box is ideal for protecting the connections of outside power sources, such as LED equipment, solar energy equipment, external wiring, factory automation control, LED billboards, automatic irrigation machine, landscape lights and so on. The power must be turned off before installation to prevent electric shock. If you lack electrical knowledge, it is recommended to hire a professional electrician to do the installation.

Material: Plastic


Brand: Helunsi


Color: Black-2pcs


Style: waterproof ip68 external junction box


Product Dimensions: 1.26"D x 2.72"W x 1.26"H


Brand Name: Helunsi


Model Number: M686-2


Manufacturer: Helunsi


Item Highlight: 2 Pack Underground Wiring Coaxial Cable Connector, Wire Range 5 to 15mm Electrical Power Cord Weatherproof Boxes - Black


Number of Items: 2


Unit Count: 2 Count


Global Trade Identification Number: 36


Included Components: 2 x electrical junction box


Part Number: AST003--2pcs


Color: Black-2pcs


Style: waterproof ip68 external junction box


Finish Type: PC housing


Installation Type: Screw-In


Specification Met: Ip68


Item Dimensions D x W x H: 1.26"D x 2.72"W x 1.26"H


Item Weight: 0.3 kg


Material: Plastic


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Saturday, Sep 19

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • Zip Pay in 4
  • Financing through Apple Pay
  • Financing through Google Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Top Amazon Reviews


  • Pool light splice
Color: Black-1pcs
Used this to replace my pool light without pulling a new cable so it will be submerged forever. I soldered the connections and then filled the box with a pourable silicone. Normally you have to pull the old cable (mine is 100ft) out but after 20 years it is almost impossible to break it loose and pull the new one through. The best price I found was $250 for the labor. Way easier and cheaper to use this j-box but if it fails it'll ruin a $500 light. Works great so far but just installed April 2024. I'll update this if there is any problem. ... show more
Reviewed in the United States on April 15, 2024 by Average Bear

  • Very good product
Color: Black-1pcs
It was a little hard to work with but I like the features of the box
Reviewed in the United States on March 3, 2025 by Don

  • weatherproof so far.
Color: Black-1pcs
Pretty much a no brainer on how to setup and use this item. My only 2 cons would be that it is a chore to get a larger style cable (power cord) thru the sealing rings and into the box and I wish that were or was another mounting method.
Reviewed in the United States on June 11, 2023 by AZazel

  • Easy to use for wire splicing.
Color: Black-1pcs
Worked very well to splice an outdoor power cable for a septic system lift pump. The box is left above ground under a fake rock, so I have not tested the weatherproofing as well as some other applications might.
Reviewed in the United States on March 19, 2025 by William L.

  • Excellent product
Color: Black-2pcs
Had to repair Internet line to house, was cut during digging session. Worked great and is very well made.
Reviewed in the United States on May 8, 2024 by S. B. Droz

  • Perfect for splicing low-voltage wires outside
Color: Black-1pcs
I needed to cut and re-route speaker wire to a deck, there was almost no slack in the wire. This box allowed me to do a perfect in-line splice and box seems very well constructed and should protect well against the elements.
Reviewed in the United States on July 11, 2024 by AJ84

  • Great Product with Cheap Screws
Color: Black-2pcs
I needed a waterproof junction box to use in conjunction with a sprinkler control line repair. The junction box was perfect for my needs. I was impressed with the seals and overall quality of the junction box until I came to screwing the lid on the box. The manufacturer included the cheapest screws I've ever seen. One of the screws lacked slots in the head and was useless! My recommendation to the manufacturer is to get rid of the cheap screwdriver included and spend the money on higher-quality screws. ... show more
Reviewed in the United States on August 18, 2023 by Michael G Jordan

  • only fits #12 gauge wire or less
Color: Black-1pcs
would not fit my wire
Reviewed in the United States on March 3, 2025 by Jack T.

Can't find a product?

Find it on Amazon first, then paste the link below.
Checking for best price...