Lo-Carbon Revive SELV 7ref nr. 473849A Designed to exceed the needs of Social HousingContinuous running bathroom and kitchen fanHigh performance on trickle to avoid going to boost too oftenSmall footprint with optional decoration frameSlimmer profile, making it suitable for window installationsUnique lock settings to prevent tamperingHumidity, timer and pullcord functions included (HTP)Innovative Multi-Vortex technology ensures high performance with improved sound and energy levelsIntelligent Smart Sense data logging technology tells you days run, boost hours run, energy used Condition is New. Shipped with Royal Mail Tracked 48.