CN101S 1 Second Interval Timer Clock 7 Days Weekly Programmable Digital Timer 220V AC Switch Power Timer This digital timer switch automatically turns on and off various electric 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. The timer features a built-in battery to retain settings during power outages. It uses a high-accuracy CMOS chip with low power consumption and strong anti-interference performance. Simple and easy to set up. Rated for 3500 Watts / 16 Amps, 1NO relay output. Programmable in 1-second intervals over 24 hours and 7 days per week. Built-in 1.2V battery maintains 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: Light shooting and different displays may cause slight color variations between the item in the picture and the actual product. Measurement may vary by +/- 1-3 cm.