This family of timers has been developed to enable their installation in the flush-mounting box. All the device activate the load by turning on any switch (TE9780) or any external push-button (TE9781 and TE9782). The TE9780 is designed to delay the shutdown of fans in toilettes. When enabled the control switch that turns on the light, the timer also activates the fan (25÷300W). Only when the control switch is turned off and the light is turned off the timing of aspiration starts and continues to remain active for a fixed time of about 3 minutes. The TE9781 is designed to timed lights connected after a fixed time of 3 minutes. Its main feature is the possibility to replace a normal switch using the two cables in the same installation without any changes, because it will not need the direct voltage. The timer TE9782 has been created for the timed lighting of stairways, hallways, warehouses, places of transit, etc. Pressing the push button, the timer remains active from a minimum of 20 seconds to a maximum of 20 minutes.