From the page: So, you and the family is going on this big vacation and just as you finish locking up everything and shut the main door, your wife calls out - hon, did you check the gas and switch-off all the lights? Sounds familiar? How about if you had the Off' installed! It is a door handle with connections to your mains like gas supply and electricity. Simply switch off both or either one of the services by rotating the dial and flip it back to activate it all. Super cool and innovative I tell ya!