About This Item Switch Function: Support 16 groups of on/off per day, one-touch automatic, can set the 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 is connected as a dual control switch. (There is a manual and methods at the bottom of the page) High Quality Material: This time relay is made of high quality durable hard plastic which is anti-rust, corrosion resistant, and high strength for maximum durability. Smooth surface and no burr, delicate and comfortable touch, manufactured under strict quality control standards and improved design for a longer life span. Application: The time switch can automatically turn on and off different types of electrical equipment. fixed time. Advanced presets a week ago, DIN rail mounting. This time relay is widely used to control lights, water heaters, sprinklers, bottling machines, preheaters, agricultural equipment, transmission equipment, household appliances, etc. High Precision: This time relay features V/40mA load point, high-precision industrial-grade chip, strong anti-interference, using 8-bit industrial-grade chip, small error, high stability, accurate motion time, daily travel time error of less than 2 seconds. Superior Performance: The built-in high-performance battery is used as a backup power supply, which can maintain time display and data storage for more than 6 months after a power outage. The time control circuit and the charging circuit are separated from each other. The passive output AT The output can also be used for signal monitoring.