?【24-HOUR TIMER】This timer provides daily control, and with the convenient override switch (OFF, AUTO and ON), you can interrupt the timer cycle when not needed. This timer can help you reduce the operating time of electrical appliances, saving you energy and money. ?【15-MINUTE INTERVALS】The push pin segments around the dial each represent 15 minute periods. And there are 96 operations per day for you to set accommodates varied schedules, ultra convenient for precision setting. ?【SIMPLE OPERATION】To program, simply select the time period(s) you want the electrical device turned on, and push down the push pins between that time period. Then rotate the inside dial clockwise until points to the current timer. ?【NON POWER FAILURE】Included a Nickel metal hydride battery which can last for 3 years. As the timer switch switches on, the built-in battery will start charging automatically, and the timer will be full of power after 3 days of continuous switching. ?【WIDE APPLICATION】24-Hour mechanical timer is great for control LED, CFL, incandescent and halogen bulbs or other hard-wired devices, it is practical to lower power consumption of street lamp, billboard, neon light, etc.