High- timer switch, three Wire input and output three Wire, helping to solve the problem that some customers are not convenient to wire neutral wire. Just set the time of ON or OFF,with a total of 17 on or off settings,From Monday to Sunday, any setting can be set at least one minute apart and the maximum time is 168 hours (equal to 1 week), which can be turned on and off manually temporarily. As long as it It is widely used in three-phase 350v-420vac motor and other equipment such as water pump, fish pond oxygenation, rice steaming machine, water heater, billboard, neon lamp, exhaust fan and so on. Can achieve unmanned management, safe and reliable, stable , is a very good choice. Built-in rechargeable battery, power off memory. No need to reset the program, convenient and practical. Specification: Voltage: 380 V or 50-60 Hz Control output: 16 A (three-phase direct output) Setting times: 17 ON or OFF (day or week) Set the time: from 1 minute to 168 hours Error in travel time: 1s or 24h Power outage memory: over 180 days (built-in 1.2v rechargeable battery) Installation size: 120 x 120 x 52mm or 4.7 x 4.7 x 2in Installation method: screw, guide (35mm) Weight: approx. 467 g or 16.5 oz Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.