1. Set your humidifier to run for 2 minutes and then off for 5 minutes and repeat for the most appropriate humidity. Multifunctional: thanks to its 3-in-1 design, this timer can do daily on-off timer, countdown and turn on/off timer, and short on-off cycle timer, making it much more versatile than other models Good Helper and Money Saver: help to streamline your daily routines, reduce energy use and save on your energy bills by automatically power your appliances on and off as needed User Friendly Design: large screen for clearer view of digits and numbers; built-in battery to memorize your programs during power outages; completely silent and ideal for home use Protect Your Electronics: countdown and turn off mode can be extremely helpful to limit the charging time for your expensive electronic devices and prolong their service lives Buy with Confidence: V0 fireproof housing plus its child lock function make this timer safe to use and operate; each timer is backed by lifetime support