ENERGY SAVING: Connect your device directly to the power supply via the mini electrical outlet timer to automatically control the opening and closing of household appliances according to the schedule you set. energy and simplify your daily work. SWITCHING FUNCTION: Support 16 groups per day on/off, one button automatic, can be set to cycle day/week. Two-way control design, 3.4 is normally open switch, 3.5 is switch normally closed and 3.4.5 are connected as dual control switches.(With instruction manual, and there are also methods at the bottom of the page HIGH PRECISION: This timer relay built-in 1.2V/40mA rechargeable point, high precision, industrial-grade chip, strong anti-jamming, using 8-bit industrial-grade chip, small error, high stability, travel time accurate, daily commute time error is less than 2 seconds. SUPERIOR PERFORMANCE: With built-in high-performance batteries as backup power, it can maintain time display and store data for more than 6 months when disconnected from the mains.The control circuit time and the charging circuit are separated from each other. The passive output at the output can also be used for signal monitoring. APPLICATION: Widely used to control lamp, water heater, sprayer, bottler, preheater, agricultural facilities, broadcast equipment, household appliances, etc. aquarium lighting and others appliances to maximize energy savings.