EINTTAX 4-Inch Wall Exhaust Fan, Silent Vent Extractor Fitted with Timer Function,milk white

?Adjustable Timer? This white wall mount bathroom exhaust fan has a timer function, which can be set to delay for 0.5/5/10/20/30 minutes during installation. After turning off the exhaust fan with the light switch, it will continue to run for 0.5 to 30 minutes before turning off. You can adjust the delay time as needed to ensure proper ventilation without unnecessary energy waste