Every time you buy a HBN product, you get: Quick and friendly customer support Quality and reliability you can trust Note: Easily connected to replace existing manual switch with full instructions but seek advice from a qualified electrician if unsure. HBN 24 Hour Indoor Energy Saving Wall-Mounted Mechanical Timer Easy to use and can be set for appliances to on/off 48 times a day. Each segment represents 15 minutes. You can set your own schedule for when to activate or deactivate the devices. Once and for all, in the future every day it will automatically turn on/off the appliance according to the set time.