✨ Certikin PU3MLP Large LED RGBW 24V Underwater Light – Stainless Steel Fascia – Concrete Pools – 1.5″ Push Fit with 20m Cable

Powerful 20W LED with ultra-wide 120° beam angle delivering stunning RGBW colour-changing illumination for larger concrete swimming pools.

💧 Product Overview

The Certikin PU3MLP Large LED RGBW Light delivers powerful, wide-angle underwater illumination specifically engineered for concrete swimming pools requiring maximum coverage. This premium 20W LED light features an impressive 120° lens angle that covers up to 20m² – more than double the coverage of mini LED lights – making it the ideal choice for larger pools or installations requiring fewer lights.

Featuring an elegant stainless steel fascia and robust 316-grade stainless steel housing with durable PC (polycarbonate) cover, the PU3MLP delivers exceptional brightness of 2,000-2,300 lumens on white and 520-570 lumens on RGBW modes with a high Colour Rendering Index (CRI) of Ra>85. The RGBW unit offers the flexibility to allow a choice of colours and shades, create programmable lighting sequences and to be dimmable.

The 1.5″ push-fit installation slots seamlessly into Class C pipe cut flush with concrete pool walls, whilst the generous 20m pre-wired cable provides flexible positioning options. Controlled via the Wi-Fi 104 system with a free smartphone app for iOS and Android, you can select from virtually unlimited colour combinations, adjust brightness, and create stunning synchronised displays. Rated IP68 for permanent underwater immersion with an impressive 50,000-hour maximum lifespan, the PU3MLP transforms any concrete pool into a captivating aquatic environment operating reliably from -20°C to +50°C.

⭐ Key Features

✅ Powerful 20W LED – Higher output than mini LED lights for maximum illumination

✅ Ultra-Wide 120° Beam Angle – Covers up to 20m² per light for larger pools

✅ RGBW Full Colour Technology – Choice of colours, shades, programmable sequences, and dimmable

✅ Designed for Concrete Pools – 1.5″ push-fit installation into Class C pipe

✅ High Luminosity – 2,000-2,300 lumens (white), 520-570 lumens (RGBW)

✅ Wi-Fi 104 Control – Operated via separate Wi-Fi controller, driver unit and power supply

✅ 24VDC SELV Operation – Class III electric apparatus powered by Safety Extra Low Voltage

✅ IP68 Rated – Suitable for permanent immersion in water

✅ 316-Grade Stainless Steel Housing – Marine-grade construction for maximum durability

✅ Stainless Steel Fascia – Classic, elegant appearance

✅ Durable PC Cover – Impact-resistant polycarbonate lens

✅ 20m Pre-Wired Cable – Generous cable length for flexible positioning

✅ 50,000-Hour Maximum Lifespan – Long-lasting LED technology

✅ Wide Operating Temperature – Functions from -20°C to +50°C

✅ CRI Ra>85 – High colour rendering for vibrant, accurate colours

✅ Alternative O-Rings Included – For fit into Class C 50mm pipe

🔧 Technical Specifications

Source: Official Certikin PU3 Light Instructions Manual (January 2024)

Specification	Value
Model	PU3MLP
Light Type	Large LED RGBW (Full colour changing)
Fascia Colour	Stainless Steel
Pool Type	Concrete Pools
Rated Power	20W
Input Voltage	24VDC
Drive Mode	External Constant Current Driver (Model: R4-CC)
Drive Current	RGBW: 350mA
Control	Wi-Fi 104
Light Source	White/RGB/RGBW
Lumen Output	White: 2,000-2,300lm, RGBW: 520-570lm
Lens Angle	120°
Colour Rendering Index (CRI)	Ra>85
Coverage Area	20m²
Maximum Lifespan	50,000 hours
Housing Material	316 Stainless Steel
Cover Material	PC (Polycarbonate)
Working Temperature	-20°C to +50°C
IP Rating	IP68 (permanent immersion in water)
Mounting Type	Push fit into Class C 1.5″ pipe (alternative o-rings included for fit into Class C 50mm pipe)
Cable Length	20m (pre-wired)
Weight	3kg
Recommended Installation Depth	400-700mm below water level

🔬 How It Works

The PU3MLP utilises advanced RGBW LED technology combined with Wi-Fi connectivity to deliver stunning, powerful underwater lighting effects:

1️⃣ RGBW LED Technology The RGBW unit offers the flexibility to allow a choice of colours and shades, create programmable lighting sequences, and to be dimmable. Four LED colours (Red, Green, Blue, White) combine to create virtually unlimited colour combinations with powerful output reaching 2,000-2,300 lumens on white and 520-570 lumens on RGBW.

2️⃣ Ultra-Wide 120° Beam Angle The wide 120° lens angle provides expansive coverage of up to 20m² per light – ideal for larger pools or installations where fewer lights are needed. This is more than double the coverage of mini LED lights.

3️⃣ Wi-Fi 104 Control System RGBW lights are operated via the control unit and/or App provided with the Wi-Fi 104 unit. The free downloadable app (iOS and Android) provides full control over colour selection, brightness levels, and pre-programmed sequences.

4️⃣ R4-CC Driver Receiving Controller Each RGBW light requires its own R4-CC driver receiving controller (PU2MLRC), which interprets signals from the Wi-Fi controller and adjusts the LED output accordingly. Multiple lights synchronise perfectly for coordinated effects.

5️⃣ 24V SELV Power Supply The dedicated power supply (PU2MLPS 24V 320W) provides safe, low-voltage power. One power supply can operate up to 26 RGBW lights, making multi-light installations cost-effective.

⚡ Electrical Requirements

Specification	Value
Rated Power	20W
Input Voltage	24VDC
Drive Mode	External Constant Current Driver (Model: R4-CC)
Drive Current	RGBW: 350mA
Control	Wi-Fi 104
Power Supply Required	PU2MLPS (24V 320W) – sold separately
Maximum RGBW Lights per Power Supply	26
Safety Class	Class III (SELV – Safety Extra Low Voltage)

Required Accessories (Sold Separately):

• PU2MLRC – R4-CC Driver Receiving Controller (1 required per light)
• PU2MLPS – Power Supply 24V 320W (1 per system, powers up to 26 RGBW lights)
• PU2MLWC – Wi-Fi 104 Controller (1 per system)

Optional Accessory:

• PU2MLE – Wall Mounted ABS Enclosure for Power Supply

⚠️ WARNING: This equipment must be installed by qualified persons only. Improper installation can create electrical hazards which could result in property damage, serious injury or death. Improper installation and servicing will void the warranty.

⚠️ WARNING: A qualified electrician must carry out all electrical wiring in accordance with local electrical regulations and UK wiring regulations (BS 7671). Swimming pools require RCD protection (30mA).

⚠️ WARNING: The RGBW Constant Current 350mA light will be damaged beyond repair if it is overpowered. Please ensure that the Constant Current Driver (R4-CC) is set to 350mA before powering on. Warranty is not applicable if used incorrectly.

🔄 Compatibility

Connection Details

Connection	Specification
Mounting Type	Push fit into Class C 1.5″ pipe
Alternative Fitting	O-rings included for Class C 50mm pipe

System Requirements

• Pool Type: Concrete pools only (use PU3MLPL for liner pools)
• Pipe Required: Class C 1.5″ pipe cut flush and sealed at the pool wall face
• Recommended Installation Depth: 400-700mm below water level
• Power Supply: PU2MLPS 24V 320W required
• Controller: PU2MLWC Wi-Fi 104 controller required
• Receiver: PU2MLRC R4-CC driver receiving controller required (1 per light)

App Compatibility

• iOS devices (free app download)
• Android devices (free app download)
• Wi-Fi 104 protocol

🛠️ Installation

List of Supplied Components

• PU3 LED Light including 20m cable pre-wired
• 2 x o-rings (fitted) for Class C 1½” pipe fitting
• 2 x o-rings (bagged) for Class C 50mm pipe fitting
• Information for use document

Mounting Requirements

Requirement	Specification
Installation Method	Push fit into Class C pipe
Pipe Size	1.5″ Class C (or 50mm with alternative o-rings)
Recommended Depth	400-700mm below water level
Pool Type	Concrete pools

Installation Procedure (per Official Manual)

1. This light is designed to be inserted into 1½” pipe which has been cut flush and sealed at the pool wall face
2. It is recommended that the receiving pipe/s be situated between 400-700mm below water level
3. The receiving pipe should be extended/converted to conduit which then runs above the water level to create a run for the cable to the central control/power point
4. When the light cable is fed through the receiving pipe/conduit, sufficient cable should remain free within the pipe in order to be able to remove the light unit to the pool surround
5. Run the cable through the pipe/conduit back to the desired control/power point
6. Coil the free cable into the pipe and insert the light body – the o-rings around the light will create a friction fit
7. The o-rings do not act as a watertight seal

Installation Notes

⚠️ WARNING: This equipment must be installed by qualified persons only

💡 The use of a suitable lubricant on the o-rings will make the insertion of the light into the pipe easier

💡 Multiple lights can be installed within a single pool

💡 Each RGBW light requires an R4-CC driver receiving controller (PU2MLRC)

💡 One power supply (PU2MLPS) and Wi-Fi controller (PU2MLWC) can operate up to 26 RGBW lights

⚠️ NOTICE: Do not operate the light in a ‘non-wet’ environment for long periods

🔧 Maintenance

Operation

RGBW lights are operated via the control unit and/or App provided with the Wi-Fi 104 unit. Please refer to the Wi-Fi 104 instructions for operational procedures relating to the light.

Routine Tasks

Task	Frequency
Visual inspection of light operation	Monthly
Check cable connections	Annually
Inspect o-ring seals	Annually
Clean fascia if debris accumulates	As needed
Verify app connectivity	As needed

Maintenance Notes

⚠️ NOTICE: This product contains no serviceable or changeable parts. Do not attempt to open the light housing. Opening the light housing will void all warranty.

💡 LED lights are sealed units – no lamp replacement required during normal operation

💡 The 50,000-hour maximum lifespan means years of maintenance-free operation

💡 Always ensure power is disconnected before any inspection work

Troubleshooting

Symptom	Possible Cause	Possible Solution
Light does not operate	No power to the light	Refer to qualified electrician to check wiring and power supply
Light does not operate	Lack of control signal	Refer to Wi-Fi 104 instructions
Failure of single light within bank of lights	Failure of single R4-CC driver	Interchange alternative light and test if working/test non-illuminating light with alternative driver. Replace driver if appropriate.
Failure of single light	Light unit failure	Interchange alternative light and test if working/test non-illuminating light with alternative driver. Replace light if appropriate.

💎 Benefits

Benefit	Description
💪 Powerful Illumination	20W LED delivers superior brightness for larger pools
🔆 Ultra-Wide Coverage	120° beam angle covers 20m² – ideal for larger installations
✨ Stunning Visuals	RGBW technology with programmable sequences and dimmable control
📱 Smart Control	Wi-Fi 104 control with free smartphone app
🔄 Synchronised Displays	Multiple lights work together for coordinated effects
⚡ High Output	2,000-2,300 lumens (white) for brilliant illumination
🛡️ Built to Last	316-grade stainless steel housing with durable PC cover
💰 Fewer Lights Needed	Wide coverage means fewer lights for large pools
🌡️ Wide Temperature Range	Operates reliably from -20°C to +50°C
🔒 Enhanced Safety	Class III SELV low-voltage operation and IP68 rating
🎨 Vibrant Colours	CRI Ra>85 for accurate, natural colour rendering
🏊 Concrete Pool Specific	Purpose-designed push-fit installation

❓ Frequently Asked Questions

Q: What is the difference between PU3 Large and PU2 Mini lights? A: The PU3 Large lights are more powerful (20W vs 12W), have a wider beam angle (120° vs 65°), cover more area (20m² vs 8m²), and are heavier (3kg vs 0.7kg). PU3 is ideal for larger pools or when fewer lights are preferred.

Q: What is the difference between PU3MLP and PU3MLP+B? A: The PU3MLP features a stainless steel fascia, whilst the PU3MLP+B has a black fascia for a contemporary look. All other specifications are identical.

Q: How many PU3 lights do I need for my pool? A: Each PU3 light covers approximately 20m². Calculate your pool’s wall area requiring illumination and divide by 20 for an estimate. For example, a pool with 60m² of wall area would need approximately 3 lights.

Q: What components do I need for a complete RGBW installation? A: Each light requires: PU2MLRC (R4-CC driver receiving controller), plus one PU2MLPS (24V 320W power supply) and one PU2MLWC (Wi-Fi 104 controller) per system. One power supply and controller can operate up to 26 RGBW lights.

Q: What voltage is required? A: 24VDC. A qualified electrician must carry out all electrical wiring in accordance with local electrical regulations.

Q: How do I control the colours? A: RGBW lights are operated via the control unit and/or App provided with the Wi-Fi 104 unit.

Q: How bright is the light? A: White: 2,000-2,300 lumens, RGBW: 520-570 lumens, with a wide 120° lens angle covering approximately 20m².

Q: What is the weight? A: 3kg (concrete pool version). The larger size and weight reflects the increased power and coverage.

Q: How long will the light last? A: Maximum lifespan of 50,000 hours.

Q: Can the light be serviced? A: No. This product contains no serviceable or changeable parts. Do not attempt to open the light housing – opening will void all warranty.

Q: At what depth should I install the light? A: 400-700mm below water level is recommended.

Q: What pipe size do I need? A: Class C 1.5″ pipe. Alternative o-rings are included for Class C 50mm pipe.

Q: Why is the cover PC instead of glass? A: The larger PU3 lights use impact-resistant polycarbonate (PC) covers which are more suitable for the larger lens size, providing excellent durability and light transmission.

📥 Downloads

📄 Installation Manual – Complete installation guide (January 2024)

✅ Safety & Compliance

This product complies with the following Statutory Instruments and Directives:

S.I. 2016:1091 ECR 2016 & 2014/30/EU EMC Directive:

• 22/30441335 DC
• BS EN IEC 61000-3-2:2019+A1:2021
• EN61000-3-3: 2013+A1: 2019

General Product Safety Regulations:

• EN60598-1: 2015+A1: 2018
• BS EN 60598-2-13:2006+A11:2021

S.I. 2012:3032 RoHS 2012 & 2011/65/EU RoHS Directive:

• BS EN IEC 62351-4:2018+A1:2020
• BS EN IEC 62351-5:2023
• IEC 62321-6: 2015
• IEC 62321-7-1: 2015
• BS EN 62321-7-2:2017
• IEC 62321-8: 2017

Additional:

• IP68 Rating – Suitable for permanent water immersion
• Class III Electric Apparatus – Operates on Safety Extra-Low Voltage (SELV)
• UKCA Marked
• CE Marked

♻️ Disposal: Once expired, this product should not be disposed of via general waste, but through a regulated waste disposal and recycling centre – please consult your local authority for full advice.

🏆 Why Choose the Certikin PU3MLP?

✅ Powerful 20W Output – Superior brightness for demanding installations

✅ Ultra-Wide 120° Beam – Covers 20m² per light for fewer fixtures needed

✅ Full RGBW Colour Control – Unlimited colours with programmable sequences

✅ Premium Build Quality – 316-grade stainless steel housing with durable PC cover

✅ Smart Technology – Wi-Fi 104 control with free iOS and Android app

✅ Exceptional Brightness – 2,000-2,300 lumens (white) output

✅ High Colour Quality – CRI Ra>85 for vibrant, accurate colours

✅ Long Lifespan – 50,000-hour maximum lifespan

✅ Wide Temperature Range – Operates reliably from -20°C to +50°C

✅ Scalable System – One controller operates up to 26 lights

✅ Proven Reliability – IP68 rated for permanent underwater use

✅ UK Compliance – UKCA and CE marked, meets UK safety regulations

🤝 Why Buy From Parts4Tubs?

✅ UK-based company with local support

✅ Fast UK delivery

✅ Expert advice from pool and spa specialists

✅ Competitive pricing

✅ Full warranty support

✅ Easy returns within 30 days

✅ Related components and accessories available (power supplies, controllers, receivers)

✨ Summary

The Certikin PU3MLP Large LED RGBW Light delivers powerful 20W illumination with an ultra-wide 120° beam angle covering 20m², specifically designed for larger concrete swimming pools. Featuring a secure 1.5″ push-fit installation into Class C pipe, Wi-Fi 104 smartphone control with full RGBW colour-changing technology, programmable sequences and dimming, this IP68-rated light delivers 2,000-2,300 lumens (white) with CRI Ra>85 colour quality. Built with 316-grade stainless steel housing and stainless steel fascia, durable PC cover, weighing 3kg, operating from -20°C to +50°C, with a 50,000-hour maximum lifespan. One power supply operates up to 26 synchronised lights. The ideal lighting solution for larger concrete pools requiring maximum coverage with fewer fixtures.