Switching function: support 16 groups on/off per day, one button automatic, can be set to day/week cycle. Two-way control design, 3.4 is a normally open switch, 3.5 is a normally closed switch and 3.4.5 are connected as dual control switches. High quality materials: This time relay is made of high quality materials. high quality. materials. Quality durable hard plastics, anti-rust, anti-corrosion and high strength for maximum durability. The surface is smooth and burr-free, and the hand feels delicate and comfortable. Manufactured under strict quality control standards, the improved design can extend the service life. Application: The time switch can automatically turn on and off different types of electrical equipment on a fixed schedule. One week in advance, advanced preset, DIN rail installation. This time relay is widely used to control lamp, water heater, sprayer, bottler, preheater, agricultural facilities, broadcast equipment, home appliances, etc. High precision : This 1.2V/40mA relay built-in rechargeable point time delay relay, high precision, industrial grade chip, strong anti-jamming, using 8-bit industrial grade chip, small error, high stability, accurate travel time, the daily travel 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 the power is turned off. it is disconnected from the mains. The time control circuit and the charging circuit are separated from each other. The passive output can also be used for signal monitoring.