✨ Certikin PU3MLPL Large LED RGBW 24V Underwater Light – Stainless Steel Fascia – Liner Pools – 1.5″ Screw Fit with 20m Cable

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

💧 Product Overview

The Certikin PU3MLPL Large LED RGBW Light delivers powerful, wide-angle underwater illumination specifically engineered for vinyl liner 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 PU3MLPL 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 secure 1.5″ screw-fit installation threads directly into new or existing Certikin liner inlet fittings for a watertight seal, 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 PU3MLPL transforms any liner 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 Liner Pools – 1.5″ screw-fit installation into new or existing Certikin liner inlet fittings

✅ 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

✅ Perfect Fit Design – When fully installed, the light body covers the inlet clamp plate exactly

🔧 Technical Specifications

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

Specification	Value
Model	PU3MLPL
Light Type	Large LED RGBW (Full colour changing)
Fascia Colour	Stainless Steel
Pool Type	Liner 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	Screw fit into new or existing Certikin liner inlet (with or without socket nipple connection)
Cable Length	20m (pre-wired)
Weight	3.5kg
Recommended Installation Depth	400-700mm below water level

🔬 How It Works

The PU3MLPL 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	Screw fit into new or existing Certikin liner inlet (with or without socket nipple connection)
Pipe Compatibility	1.5″ or 2″ pipe

System Requirements

• Pool Type: Vinyl liner pools only (use PU3MLP for concrete pools)
• Fitting Required: New or existing Certikin liner inlet fitting (with or without socket nipple connection)
• 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
• Information for use document

Mounting Requirements

Requirement	Specification
Installation Method	Screw fit into Certikin liner inlet fitting
Compatible Fittings	New or existing Certikin liner inlet (with or without socket nipple connection)
Recommended Depth	400-700mm below water level
Pool Type	Vinyl liner pools

Installation Procedure (per Official Manual)

1. The liner fitting and the liner should be installed as normal
2. The light body is threaded and shaped in order to be a perfect fit into and over the liner inlet clamp plate
3. The pipework connected to the inlet fitting/s 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 – position the light body within the inlet fitting and screw the light into place
7. When fully installed the light body will cover the inlet clamp plate exactly

Installation Notes

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

⚠️ NOTICE: The inlet fitting should be for use by the light only – it should not be connected to the pool circulation system

⚠️ Install between 400-700mm below water level for optimal lighting coverage

💡 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 seal around liner fitting	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
🏊 Liner Pool Specific	Purpose-designed screw-fit installation for vinyl liner pools
📱 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
📐 Perfect Fit	Light body covers inlet clamp plate exactly when installed

❓ 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 (3.5kg vs 1.0kg for liner versions). PU3 is ideal for larger pools or when fewer lights are preferred.

Q: What is the difference between PU3MLPL and PU3MLPL+B? A: The PU3MLPL features a stainless steel fascia, whilst the PU3MLPL+B has a black fascia for a contemporary look. All other specifications are identical.

Q: What is the difference between the liner pool and concrete pool versions? A: The liner version (PU3MLPL) uses a 1.5″ screw-fit into Certikin liner inlet fittings and weighs 3.5kg. The concrete version (PU3MLP) uses a push-fit into Class C pipe and weighs 3kg.

Q: Do I need a liner inlet fitting? A: Yes, the light is designed to be installed into a new or existing Certikin liner inlet fitting connected to either 1.5″ or 2″ pipe.

Q: Can I connect the inlet fitting to the pool circulation system? A: No. The inlet fitting should be for use by the light only – it should not be connected to the pool circulation system.

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.

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: 3.5kg (liner pool version is heavier than the 3kg concrete version).

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.

📥 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 PU3MLPL?

✅ 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

✅ Liner Pool Specialist – Purpose-designed screw-fit installation

✅ Classic Stainless Steel Finish – Elegant fascia for timeless pool aesthetics

✅ 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, liner inlet fittings)

✨ Summary

The Certikin PU3MLPL Large LED RGBW Light delivers powerful 20W illumination with an ultra-wide 120° beam angle covering 20m², specifically designed for larger vinyl liner swimming pools. Featuring a secure 1.5″ screw-fit installation into new or existing Certikin liner inlet fittings, 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 3.5kg, 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 liner pools requiring maximum coverage with classic styling.