Ollny Christmas Tree Lights – 20m 200 LED Outdoor Fairy Lights (mains powered), cool white, IP44 waterproof with remote, timer & 8 modes

Quick overview

If you’re trying to build a Christmas look without making everything complicated, these Ollny Christmas Tree Lights are a straightforward option. They’re mains powered, designed for indoor and outdoor use, and come with a remote so you can switch up the effects without getting up every time. With 200 cool white LEDs over a 20m length, they’re the kind of set you reach for when you want visible, twinkly decoration rather than subtle ambient lighting.

That said, they’re not a “premium specialist” lighting system—more of a convenient, all-rounder string for home, garden and events. The practical question is whether your space benefits from lots of LEDs and a plug-in setup, and whether the cool white look matches the vibe you’re after.

Key takeaways

These lights bring a few things together that matter for real-life decorating: outdoor-rated materials (IP44), a long run with a power cable, and multiple display modes you can change instantly via remote. There’s also a timer so you can set them to come on automatically each night, which is handy when you’re busy or you don’t want to keep turning them on and off.

One nice touch is the memory function, which keeps the last mode you used. That means you’re not stuck with the default effect every time you switch the lights back on.

What you’ll notice day to day

The 8 modes are the main “wow” factor, at least on paper. You get steady on plus several animated patterns such as in wave, sequential, chasing flash, fade and combinations. The listing also mentions a remote for easy changes, with the last-opened mode remembered.

In use, it feels like a typical seasonal set: you plug it in, choose the effect, and then step back to see how it falls across the area you’ve lined. For example, if you wrap the string along a stair banister or outline a garden feature, you can keep switching between wave and chasing effects to match the moment—calm for evenings, more lively when guests arrive.

Brightness, colour and what it means

These are cool white lights with dimmable brightness levels: 100%, 75%, 50% and 25%. That’s useful because some spots can look a bit harsh at full output, especially indoors or near windows. If you want a brighter “festival” look for outdoors but a softer glow inside the house, the different brightness settings help without needing additional accessories.

Worth noting that dimming can’t magically change the colour temperature—so if you’re aiming for warm white or a different style of Christmas glow, you may find cool white doesn’t suit your plan.

Outdoor and weather resistance (IP44)

The set is rated IP44 waterproof and described as durable for conditions like rain and snow coming through. In practical terms, that’s the kind of rating you look for when decorations are exposed and you don’t want to baby them.

Still, don’t treat any decorative lights as fully “forget about them forever” equipment. If you’re placing them where they’ll take heavy direct water or prolonged bad weather, it’s sensible to arrange the cable runs and connections in a way that minimises stress on the plug area.

Tech specs

• Name: Ollny Christmas Tree Lights (mains powered)
• Type: Outdoor fairy light string
• Format: Plug-in / mains powered
• Length: 20m
• LED count: 200
• Power cable length: 3m
• Colour: Cool white
• Waterproof rating: IP44
• Modes: 8 (steady on, in wave, sequential, slo-glo, chasing flash, fade, flash and combinations)
• Remote: Yes
• Timer: Yes (lights up automatically every night once set)
• Memory function: Retains the last-opened mode
• Brightness levels: 100%, 75%, 50%, 25%
• Voltage (as stated): 31V low voltage
• Use cases mentioned: indoor/outdoor/garden/xmas decorations, including houses, bedrooms, stairs, gazebos and holiday events

Who it’s for (and who should skip it)

It makes sense if you want one mains-powered string that can handle both indoor and outdoor Christmas decorating, and you like the idea of remote-controlled effects with a timer. If you’ve done the “untangle lights, turn them on, forget the off time” routine before, the timer + memory function is a genuinely practical benefit.

It might not be for you if you’re after a warm white look, or if you only need a very small decoration area and the longer 20m run feels like overkill. Also, if your priority is a highly specialised, ultra-realistic lighting effect (rather than the standard animated modes), these stay more in the straightforward category.

Buying verdict

Is it worth it?

This Ollny Christmas Tree Lights set is worth considering if your plan includes both indoor and outdoor Christmas decoration, and you want cool white LEDs with multiple effects you can control from a distance. The IP44 waterproof rating, 31V low voltage approach (as stated), dimmable brightness and built-in timer make it a sensible “set it up and enjoy it” choice.

You may want to look elsewhere if you don’t like cool white, or if you’re decorating a very tight space where the 20m length and effect variety won’t really add value. For most households though—especially if you’re putting lights on a garden feature, lining a path, or dressing up stairs—this hits the practical boxes without turning the job into a project.

Mini FAQ

How do the 8 lighting modes work?

The lights are described as offering 8 modes, including steady on, in wave, sequential, slo-glo, chasing flash, fade, flash and combinations, with changes made via remote.

Is there a timer so I don’t have to switch them on daily?

Yes. The listing states you can set a timer so the lights light up automatically every night.

Can you use them outside?

Yes, they’re described as IP44 waterproof and intended for indoor/outdoor use, including gardens and external decorations.

Is the brightness adjustable?

Yes. There are four brightness levels (100%, 75%, 50% and 25%).

What colour are the lights?

The string is described as cool white.