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.
Call at 111 from your Vodafone Mobile Number.(Charge 50p per 3 Minutes). From any other Mobile Call at +91 9811098110. (Charge 50p per 3 Minutes). Call at 198 which is Toll Free, For any complaints, service activation /deactivation and tariff change requests.