Abstract: In one aspect, the present invention is directed to a system for controlling the gas supply to a gas heater (such as a gas stove, a heating stove, and so on), the system comprising: an electric valve, for blocking and unblocking a gas supplying pipe to said gas heater; a control unit, for controlling the operation of said electric valve; a timer, for determining a delay in activation of said electric valve to block said gas supply; and a remote-control unit, for providing, in a mobile manner, user interface for setting said timer; and a processing unit, for concentrating information from said timer, and activating the operation of blocking gas supply passage whenever the time of said timer runs out.