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Merlin Humidity Tracking Fan – 100 mm SELV Extractor is backordered and will ship as soon as it is back in stock.
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Place your order before 3pm for next working day delivery.
Please note: Additional delivery charges may apply for Northern Ireland, Isle of Wight, Isle of Man, Isles of Scilly, Scottish Highlands & Islands, and Channel Islands. We will contact you to inform you of any additional costs once your order is received, or you can call us on 0800 111 4898 beforehand to confirm.
The Merlin Humidity Tracking Fan is a fully automatic 100 mm (4″) axial extractor designed for wall, ceiling, or window applications*. It is SELV-rated and IPX7-certified, making it safe for use in bathroom zones 1 and 2. Operating at just 2 watts via a 12 V DC motor, this energy-efficient fan automatically switches to full boost when it detects a rapid increase in humidity, then returns to a low trickle once levels stabilise. It’s whisper-quiet, maintenance-free, and includes a remote humidity sensor and transformer unit for flexible installation.
*Note: Window fittings require a separate kit. The transformer and humidity sensor must be placed outside bathroom Zone 2. LED function display and pull-cord included.
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