Switch Function: Supports 16 groups per day on/off, 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 a dual control switch. High-quality materials: This time relay is made of high-quality material -Quality materials: High-quality durable hard plastics, rust-proof, corrosion-resistant and high strength for maximum durability. The surface is smooth and burr-free, and the hand feels delicate and comfortable. The improved design is manufactured under strict quality control standards and can extend the service life. Application: The switch of the timer can automatically turn on and off various types of electrical equipment according to a fixed schedule. Advanced presetting one week before DIN rail installation. This time relay is widely used to control lamps, water heaters, sprayers, bottlers, preheaters, agricultural equipment, broadcasting equipment, household appliances,