Dimplex Optimyst Cassette 500 Retail Multi Electric Fire

The Dimplex Optimyst Cassette 500 Retail Multi redefines what an electric fire can be. Designed not as a heater, but as a statement of pure ambience and atmosphere, this innovative fire is all about creating the most authentic flame experience possible. Instead of providing heat, its purpose is to deliver a spectacular visual centrepiece that looks every bit as captivating as a real log fire, but without the mess, smoke, or upkeep.

At its core is Dimplex’s award-winning Optimyst flame technology, which cleverly combines water vapour with LED lighting to produce three-dimensional flames and smoke that move and shift just like the real thing. Unlike standard electric fires, the Cassette 500 takes realism further with fully colour-changeable flames. Using the included handset or the Flame Connect App, you can instantly transform the mood of your room, switch from the warmth of amber and red to cool aquamarine, dramatic violet, or cycle through a blend of colours for a constantly evolving display.

Because this model is designed purely for visual impact, it doesn’t include a heater. This makes it perfect for creating year-round atmosphere without raising the room temperature, ideal for modern homes, commercial venues, or anywhere you want the cosy look of flames without the heat.

The Cassette 500 Retail Multi is also brilliantly versatile. It can be used as a standalone fire or joined together with multiple 500 or 1000 sized units to create a wide panoramic display. Whether installed as a one-sided, two-sided, or even four-sided feature, this frameless design adapts to your vision, from striking media walls and false chimney breasts to see-through room dividers.

Other thoughtful touches make it easy to live with. The front-loading water tank provides 8–10 hours of uninterrupted flame effect per fill, while optional log sets can be added if you prefer a more traditional look over the minimalist bare flame effect. Adjustable crackling log sounds add another sensory layer, making it feel like you’re sitting in front of a real wood-burning fire.

With its colour-changing flames, app controls, and total flexibility in design, the Dimplex Optimyst Cassette 500 Retail Multi is one of the most advanced ambient fires available today.

Key Features:

No heater included – designed purely for visual ambience and focal point appeal.

Optimyst flame technology – ultra-realistic flame and smoke effect using water vapour and LEDs.

Colour-changeable flames – choose from amber, violet, red, aquamarine, or a mix using the Flame Connect app.

Year-round use – enjoy the look of a real fire without adding heat.

Modular design – connect multiple units for wide or see-through installations.

Frameless finish – perfect for custom-built features, cinewalls, and room dividers.

8–10 hours continuous flame effect per refill with easy-access water tank.

Optional log set accessory for a classic aesthetic.

Adjustable crackling log sound effects for added realism.

Smart controls – remote control and app integration included.

Eco-friendly and safe – no smoke, no fumes, no maintenance.


The Dimplex Optimyst Cassette 500 Retail Multi is the ultimate choice for anyone who wants a luxury flame experience without the heat – perfect for media walls, feature fireplaces, or simply creating a stunning ambient focal point in any room.

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