Usage Tips: CN101S 1 Second Interval Timer Clock 7 Days Weekly Programmable Digital Timer 220V AC Switch Power Timer The CN101S can automatically turn on and off various types of electrical equipment at preset times. It is widely used for 7-day programmable control of streetlights, neon signs, lamps, water heaters, air conditioners, billboards, electric cookers, boosters, sprayers, bottlers, preheaters, agricultural facilities, and broadcasting equipment. This digital timer switch includes a built-in battery to retain programs during power outages. It features low power consumption, a high-accuracy CMOS chip, strong anti-interference performance, and is simple and easy to set up. Rated for 3500 Watts / 16 Amps, 1NO contact, 24 hours/7 days a week programmable. Equipped with a 1.2V built-in battery to preserve memory during power failure. Auto time error correction within +/- 30 seconds per week. Input and output voltage: 220V. Dimensions: 7.0 cm x 7.0 cm x 4.0 cm Material: ABS + electronic components Color: White Package Contents: 1 x Timer Switch 1 x User Manual Note: Only the items listed above are included. Other products are not included. Note: Lighting and display differences may cause slight variations in color between the image and the actual item. Measurement may vary by +/- 1-3 cm.