A standard cooling fan is essentially a bladed DC motor. By varying the voltage input across the acceptable range for a fan, the speed of the fan will increase (to added voltage) and decrease (to reduced voltage); a faster fan means more air moved and thus a higher heat exchange rate.
Contact them toll-free from a Vodacom cellphone by dialing 111. Contact them toll-free from a Telkom phone by dialing 0800-111-234. Note: Telkom toll-free numbers are generally NOT toll-free when dialed from a MTN/Vodacom cellphone.
For any queries on our products or services, call Vodafone Care on +91 9820098200 from any phone or199 (chargeable at 50p for 3 mins for agent access) from your Vodafone mobile phone anytime. 2nd Floor, Skyline Icon, 86/92, Andheri Kurla Road, Marol Naka, Near Mittal Industrial Estate, Andheri East, Mumbai 400059.