{"product_id":"100mm-extractor-fan-with-overrun-timer-and-humidistat-white","title":"100mm Extractor Fan with Overrun Timer and Humidistat - White","description":"\u003ch5\u003eDescription\u003c\/h5\u003e\n\u003cp\u003eThis Knightsbridge 100mm extractor fan combines an adjustable overrun timer with an integrated humidistat, running at 9.7W on 230V mains to extract 87m³\/hr through a 102mm wall or ceiling aperture. The humidistat detects excess moisture and activates the fan automatically when humidity exceeds preset thresholds of 60%, 70%, 80% or 90% RH, while the overrun timer continues extraction for 1, 5, 15 or 30 minutes after the fan is switched off or humidity drops back to normal levels.\u003c\/p\u003e\n\u003cp\u003eDesigned for bathrooms, ensuites, utility rooms and WCs where condensation control is needed, the fan sits flush to the wall or ceiling with a 49.9mm frontal projection and 78.5mm recessed depth behind the surface. The IP45 rating allows installation in bathroom Zone 1, meaning it can be fitted above a bath or within shower enclosures at 2.25m height or above. The ABS casing is double-insulated and does not require an earth connection, simplifying the wiring run from a switched fused spur or ceiling pull-cord.\u003c\/p\u003e\n\u003cp\u003eA built-in backdraught shutter closes when the fan is not running, preventing cold air ingress and heat loss through the duct. At 28.5dBA measured at 3 metres, the fan runs quieter than most domestic refrigerators, making it suitable for late-night use in homes where noise transmission between rooms is a concern. The white ABS faceplate matches standard UK bathroom fittings and the fan is Part F and Part L Building Regulations compliant, meeting the minimum continuous mechanical extraction requirements for new-build and renovation projects.\u003c\/p\u003e\n\u003ch5\u003eSpecification\u003c\/h5\u003e\n\u003ctable class=\"spec_table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eHeight\u003c\/td\u003e\n\u003ctd\u003e157.6mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWidth\u003c\/td\u003e\n\u003ctd\u003e157.6mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDepth\u003c\/td\u003e\n\u003ctd\u003e127.2mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProjection\u003c\/td\u003e\n\u003ctd\u003e49.9mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRecessed Depth\u003c\/td\u003e\n\u003ctd\u003e78.5mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCut-out Diameter\u003c\/td\u003e\n\u003ctd\u003e102mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConstruction\u003c\/td\u003e\n\u003ctd\u003eABS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFinish\u003c\/td\u003e\n\u003ctd\u003eWhite\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIP Rating\u003c\/td\u003e\n\u003ctd\u003eIP45\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eClass\u003c\/td\u003e\n\u003ctd\u003eII\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePrimary Voltage\u003c\/td\u003e\n\u003ctd\u003e230V 50Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEarth Terminal\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNoise Levels\u003c\/td\u003e\n\u003ctd\u003e28.5 - 30dB @ 3m\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAirflow\u003c\/td\u003e\n\u003ctd\u003eAirflow: 24l\/s [86.93m3\/hr]\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSFP\u003c\/td\u003e\n\u003ctd\u003e0.401W \/ (l\/s)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHumidistat function\u003c\/td\u003e\n\u003ctd\u003eInterval functions: 4\/8\/12\/24hrs Humidity levels: 60\/70\/80\/90%RH\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOverrun Timer\u003c\/td\u003e\n\u003ctd\u003eOverrun timer settings: 1\/5\/15\/30mins\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e3 Year Guarantee\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch5\u003eDownloads\u003c\/h5\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0729\/8993\/3835\/files\/datasheet-EX1THWH.pdf\" target=\"_blank\"\u003eProduct Specification Sheet\u003c\/a\u003e\u003c\/p\u003e\n\u003ch5\u003eFrequently Asked\u003c\/h5\u003e\n\u003cp\u003e\u003cstrong\u003eHow does the humidistat function work?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe integrated humidistat monitors relative humidity and activates the fan when levels exceed your chosen threshold: 60%, 70%, 80% or 90% RH. You can also set interval functions for 4, 8, 12 or 24 hours to control how frequently the fan checks humidity levels. Once humidity drops back below the threshold, the overrun timer continues extraction for the set duration.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat size aperture is needed for installation?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe fan requires a 102mm diameter circular aperture in the wall or ceiling. The total recessed depth behind the surface is 78.5mm, so check that your wall or ceiling cavity can accommodate this depth. The frontal faceplate projects 49.9mm once fitted.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs it suitable for bathroom Zone 1?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYes. The IP45 rating allows installation in bathroom Zone 1, which covers areas above baths and within shower enclosures at 2.25m height or above. The fan is double-insulated and does not require an earth connection.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow quiet is the fan?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eAt 28.5dBA measured at 3 metres, the fan runs quieter than most domestic refrigerators and is suitable for overnight use in homes where noise transmission between rooms is a concern. The ABS casing and motor mount design reduce vibration transfer to the wall or ceiling structure.\u003c\/p\u003e","brand":"Knightsbridge","offers":[{"title":"Default Title","offer_id":51391684739339,"sku":"EX1THWH","price":50.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0729\/8993\/3835\/files\/1949362_87ebe639-2a85-44e2-aedd-2cee7bf9a1d8.jpg?v=1747063449","url":"https:\/\/niori.co.uk\/products\/100mm-extractor-fan-with-overrun-timer-and-humidistat-white","provider":"Niori","version":"1.0","type":"link"}