A computer-implemented method performed by a device connected to a light and at least a first sensor is disclosed. The method includes: setting a first condition for activating the light; setting a second condition for deactivating the light; transmitting a first signal to the light to activate the light when the first condition is met; transmitting the second signal to the light to deactivate the light when the second condition is met; setting a third condition for activating the first sensor; receiving a signal from the first sensor; if the light is deactivated and the third condition is met, activating the light; and if the light is activated and the third condition is met, keep the light activated.