4PIN M18 Transparent Waterproof Male And Female Plug Terminal Connector

Model: 4PIN-M18-WTC Review stars 0.0 (0 Reviews) Various options in stock
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Product Information

Ensure a robust and weather-sealed connection for your lighting projects with the 4PIN M18 Transparent Waterproof Terminal Connector. This male and female plug set is engineered for durability and ease of use, featuring a secure screw-terminal block that eliminates the need for soldering. Its transparent housing allows for quick visual inspection of connections, while the M18 threaded locking ring creates a tight, waterproof seal perfect for outdoor or demanding environments.

Specifically designed for 4-conductor wires, this connector is the ideal solution for joining segments of RGB LED strips or other low-voltage AC/DC devices. Unlike pre-wired pigtails, this terminal block connector provides the flexibility to use your own custom-length wiring, making it a versatile choice for both professional installers and DIY enthusiasts seeking a reliable, field-serviceable connection. It is one of the essential 4-Pin RGB LED Strips Parts for any serious installation.

Key Features

IP68 Waterproof Rating

Provides complete protection against dust ingress and long-term water immersion, making it ideal for outdoor and marine use.

Secure Terminal Block

Features screw-down terminals for a reliable, solder-free connection, allowing for easy field installation and maintenance.

Transparent Housing

The clear PVC body enables instant visual confirmation of correct wire seating and polarity, preventing installation errors.

4-Pin Configuration

Perfectly matches the wiring requirements for standard 4-wire RGB LED strips and other multi-channel low-voltage applications.

M18 Locking Thread

A robust M18 threaded coupling ring ensures the male and female plugs lock together tightly for a secure, vibration-resistant fit.

Durable Materials

Constructed with high-conductivity copper contacts and a tough PVC insulator for reliable performance and longevity.

Technical Highlights

  • Designed for High-Frequency AC/DC Circuits
  • Robust Screw-Locking Mechanism
  • Corrosion-Resistant Copper Contacts
4PIN M18 Transparent Waterproof Male And Female Plug Terminal Connector - photo 1
4-Pin M18 transparent waterproof male and female terminal connector set.

Product Specifications

ParameterDetails
Model4PIN-M18-WTC
Product TypeWaterproof Terminal Connector
Connector SizeM18
GenderMale + Female Pair
Pin Count4
IP RatingIP68
Termination StyleScrew Terminal Block
Housing MaterialTransparent PVC
Contact MaterialCopper
ShapeRound
Total Length (Each Side)Approx. 160 mm
Interface TypeAC/DC
Working FrequencyHigh Frequency

Application Scenarios

Outdoor RGB LED Strip Lighting Create seamless, weather-resistant connections for landscape lighting, deck accents, patio illumination, and architectural features using waterproof RGB LED strips. The terminal block design simplifies outdoor wiring.
Marine & Automotive Wiring Establish dependable, water-tight 4-wire connections on boats, RVs, trailers, and off-road vehicles. Ideal for custom lighting, sensors, or auxiliary power circuits exposed to moisture and vibration.
Industrial & Wash-Down Areas Perfect for connecting sensors, actuators, or low-voltage lighting on machinery in food processing plants, manufacturing facilities, or other environments that require regular cleaning and are exposed to dust and liquids.
Custom Low-Voltage Projects A versatile and robust light connector plug for any DIY electronics project needing a secure, disconnectable 4-pin connection that can be assembled in the field without special tools.

How to Use This M18 Terminal Connector

  1. Ensure all power is disconnected before starting.
  2. Unscrew the rear cable gland nut from the connector housing.
  3. Strip approximately 5-7mm of insulation from the ends of your four conductor wires.
  4. Using a small screwdriver, loosen the four internal terminal screws.
  5. Insert each bare wire into its corresponding terminal slot. Observe the correct order for your application (e.g., +12V, G, R, B).
  6. Firmly tighten each terminal screw to secure the wire. Gently tug each wire to confirm a solid connection.
  7. Slide the cable gland nut back over the cable and tighten it onto the connector housing to create a waterproof seal.
  8. Repeat for the other connector half.
  9. To connect, align the male and female plugs and push them together, then tighten the M18 locking ring until snug.
⚠ Precautions
  • Verify the voltage and current ratings of your wiring are sufficient for your LED lights or device.
  • Always double-check your wiring polarity and sequence before reconnecting power to prevent damage.
  • Do not over-tighten the terminal screws, as this can damage the wire strands.
  • For IP68 protection, ensure both the rear cable gland and the main locking ring are fully tightened.

What's in the Box

  • 1 x 4-Pin M18 Waterproof Male Terminal Connector
  • 1 x 4-Pin M18 Waterproof Female Terminal Connector

Frequently Asked Questions

Q: What is the main advantage of a terminal block connector over a standard pigtail?

A:A terminal block connector allows you to attach your own wires directly without soldering or splicing, offering greater flexibility in cable length and easier field repairs.

Q: Is this 4-pin connector compatible with RGB LED strips?

A:Yes, its 4-pin configuration is the industry standard for connecting 12V or 24V RGB LED strips, which have conductors for Red, Green, Blue, and a common positive.

Q: What does the 'M18' in the name signify?

A:M18 refers to the metric thread size of the connector's coupling nut, which is approximately 18mm in diameter. This ensures a secure, standardized fit.

Q: Can I use this connector for an underwater lighting project?

A:With its IP68 rating, this connector is designed to be submersible, making it suitable for underwater applications like pool or fountain lighting, provided all seals are properly tightened.

Q: What tools are required to install this connector?

A:You will need a wire stripper to prepare your cable and a small Phillips or flat-head screwdriver to tighten the internal terminal screws.

Q: Why is the transparent housing a useful feature?

A:The clear body allows you to visually inspect the wire connections after installation, confirming that each wire is fully seated and secured in the correct terminal.

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Downloads

Files for 4PIN-M18-WTC
Need this page for a project file or an engineering check? Click Open PDF, then save or print it from your browser. For CAD drawings, IES files or a signed test report, contact our engineers and quote the model number.

Images

These images were taken with Canon EOS 5D Mark IV and the studio light source is provided by Ra 98's full spectrum LED strip to realistically reproduce the colors of the item itself. All copyrights are created by the superlightingled team, please feel free to browse and download if you are a registered user!

4PIN M18 Transparent Waterproof Male And Female Plug Terminal Connector4PIN M18 Transparent Waterproof Male And Female Plug Terminal Connector4PIN M18 Transparent Waterproof Male And Female Plug Terminal Connector4PIN M18 Transparent Waterproof Male And Female Plug Terminal Connector

LED Strip Lights Guide

Here you can learn anything about LED strip lights — pick the topic you are interested in to go deeper. We cover LED strip lights, power supplies, controllers, accessories, and how to connect LED strip lights.  You can also watch our demo videos.


Led strip lights

Everything you need to know before you buying led strip lights

Top 6 Considerations Before Buying LED Strip Lights

1. Where do I want to place the LED strip lights? Indoor or outdoor?

• What are waterproof led strip lights?

• How to cut and connect waterproof led strip lights?

2. How much LED brightness do I need?

3. The working voltage is available?

• 5V VS 12V VS 24V led strips

• AC VS DC 

4. How long is the LED strip light suitable for my project?

5. Do I need an LED light controller to adjust the LED color and brightness?

6. How to power the LED strip lights?

What are led strip lights?

1. How do led strip lights work?

2. How long can you run an LED strip?

3. How long do LED strip lights last?

Is it worth getting led strip lights?  

1. Do LED strip lights use a lot of electricity?

2. Why are LED lights energy efficient?

3. Are LED Strip Lights sustainable?

4. What are the pron and cons of led strip lights?

5. Precautions for led strip lights

Are led strip lights safe?

1. Do LED strip lights overheat?

2. How do you stop LED strips from overheating?

3. Can LED strips catch fire?

4. Is it safe to sleep with LED strip lights on?  

What are the types of led strip lights? Flexible led strip lights VS rigid led strip lights -

1. What are flexible led strip lights?

2. What are rigid led strip lights?

3. What happens if you bend LED strip lights?

4. What is the difference between flexible led strips and rigid led strips?

How to cut led light strips? 

1. Can you cut led light strips? 

2. What happens if you cut an led strip?

3. How to cut led strip lights?

4. How to connect RGB color changing led strip lights with a connector?

5. How to know what your led strip light is?

How to choose the correct SMD led for your strip?

Which is the brightest SMD LED?

What does SMD 5050 mean?

How many lumens is a 5050 SMD LED?

How to know what type of LED strip?

What is the difference between 2835 and 5050 LED?

 

COB led strip light

What is COB led strip light?

1. What is COB?

2. What is the COB production process? 

3. Different types of COB strip lights

4. What is the difference between COB and SMD led strip lights?

5. What is the difference between COB and LED?

6. Are COB led strips better?

7. How to cut and connect COB led strips?

8. How to install COB led strip lights?

9. Can COB light strips use aluminum channels?

10. Why choose superlightingled?

 

Led neon lights

What are led neon lights?

1. What is led neon light?

2. What are neon led lights used for?

3. Are led neon lights good?

4. How to choose led neon rope lights?

5. Are led neon ropes use DC or AC?

6. Can you change the light-emitting angle or the luminous way of neon led strip?

7. Silicone Tube VS PVC Tube

How to make led neon lights?

1. How to cut led neon lights

2. Can led neon lights be connected?

3. Easy 7 steps to make led neon lights

4. How to install led neon rope?

 

Addressable led strip

Ultimate Guide to Choosing the Right Addressable LED Strip

What is an addressable LED strip?

Can you cut addressable LED strips?

How to judge if an LED strip is individually addressable?

How to choose the best DC12V addressable led strips?

How to choose the best DC5V digital led strips?

How to choose the right IC for your project?

Which IC is most commonly used?

How do I know my IC type?

How do I know if my IC is good or bad?

How many types of IC are there?

How to wire addressable led strips?

 

Color, color temperature, and CRI

The Color Difference Between Warm White 2700K, 3000K, 4000K, 6000K Pure White and 7000K Cool White

1. What is color temperature?

2. What color temperature is right for me?

• 2700K VS 3000K

• How obvious is the difference between 2700K and 3000K?

• Warm White 3000K VS Natural White 4000K VS Daylight White 6000K

• Warm White VS Cool White

3. Enjoy 2700K, 4000K, 6000K

4. Further Reading: How to install Warm White LED light strip?

How to choose the right color for your led strip lights? -

1. How many colors are in LED strip lights? 

2. What do LED light colors mean?

3. Why do white LED light turns to yellow? 

4. Why are your led strip lights not the same color?

5. What is the most relaxing color for LED lights? 

6. What color led lights is best for sleeping?

7. Are led lights bad for your eyes? 

8. Is cool white or warm white better for eyes?

What is color temperature?

1. What is the best color temperature?

2. Does color temperature keep the same as time goes by?

3. What color temperature is best for night?

4. Led strip lights about color temperature,CCT VS RGBW VS RGBCCT;

What is color rendering in​dex?

1. What is CRI in led lights?

2. How to choose the right CRI when buying led strip lights?

3. What is the relationship between CRI and brightness?

4. Is higher CRI better? High CRI VS Low CRI;

5. How to find CRI value? 

 


Led strip light connection

How to connect led strip lights?

1. How to connect led strip lights together?

2. How to connect LED light strips without connectors?

3. How to solder wires to LED strips?

4. How to connect LED strips without soldering?

5. Which one is better between soldering and using a connector?

6. How to connect mutiple led strip lights?

7. How many LED strip lights can you connect?

How to connect led strip to the power supply?

1. Ensuring the working voltage and power first

2. How to hardwire led strip lights?

3. Can I connect multiple LED strips to the same LED power supply?

How to wire led strip lights?

How to wire single color led strip lights?

How to wire tunable white/CCT led strip lights?

How to wire RGB color changing led strip lights?

How to wire RGBW led strips?

How to wire RGBCCT led strip lights?

How to wire addressable led strips?

 


Controller for led strip lights

How to choose led strip light controllers?

1. WIFI controller

2. RF controller

3. IR controller

4. Bluetooth controller

5. Remote control and panel control

6. Single color controller and multi-color controller

7. DMX512 controller

8. SPI controller

9. DALI controller

10. 0/1-10V dimmer

11. Triac series

12. Sonsor series

 


Led power supply

How to calculate power for led strip lights?

4 steps to calculate the power you need

Performance And Reasons Of LED Voltage Drop

How to choose led strip light power supply?

1. Alternating current power supply VS Direct current power supply

2. Constant current power supply VS Constant voltage power supply

3. How to choose the best led power supply for your led strip light?

 


Led strip light installlation

How to install led strip lights? What accessories will be needed?

1. Adhesive installation for IP20 and IP65 led strip lights

2. How to choose the right led tape?

3. Can IP20 and IP65 led strip lights use aluminum profiles?

4. How to use aluminum profiles?

5. Mounted clip installation for IP67 and IP68 light strips

How to install LED sensor stair lights?

Lighting Up Your Stairs With LED Strip Lights Ideas

How to install led strip lights on TV?

How to install led strip lights outdoor?

 


Accessories

How to choose led strip light connectors?

1. Are all LED light strip connectors the same?

2. How do LED strip lights connectors work?

3. What connectors do you need for LED strip lights?

4.  What are the different kinds of LED connectors?

5. How to choose the right connector for your led strip lights?

Ultimate Guide on Aluminum Profile for LED Strip Lighting

1. What are aluminium profiles used for?

2. Why choose aluminum profiles?

3. Different types of LED aluminum profiles

4. LED aluminum profile VS COB LED strips

5. How to install LED aluminum channels?

6. How To Get Ideal Light Diffuser For Your LED Strip?

7. Add Black Aluminum LED Light Diffusers For Your Home Lighting

8. How To Find The Right Aluminum LED Light Strip Diffuser Channel?