[Three-wire input and output] - High-performance timer switch, three-wire input and output, helping to solve the problem that some customers are unable to wire the neutral wire. The maximum power reaches 4kW, thus avoiding connecting the contactor. [Widely Application] - This programmable time delay relay is widely used in 350v-420vAC three-phase motors and other equipment such as water pump, water oxygenation, etc. fish pond, rice steamer, water heater, display board, neon light, fan on. [Weekly Relay] - Simply set the ON/OFF time, with a total of 17 On/Off settings. From Monday to Sunday, any setting can be set at least one minute apart and the maximum duration is 168 hours (1 week), which can be manually turned on and off temporarily. As long as it is set once, it can be cycled continuously. [Widely Application] - This programmable time delay relay is widely used in 350v-420vAC three-phase motors and other equipment such as water pump , fish pond oxygenation, rice steamer, water heater, display board, neon light, fan on. [Three-wire input and output] - Timer switch at high performance, three-wire input and output, helping to solve the problem that some customers are unable to wire the neutral wire. The maximum power reaches 4 kW, thus avoiding connecting the contactor. Features: 1. High performance stable three-phase timer switch, input three fire lines, output three fire lines, eliminate the inconvenience of some customers inconvenient to connect the zero line without the zero line, the maximum power reaches 4kW the contactor. 2. Widely used in water pump, fish pond aerator, rice bowl, water heater, billboard, neon, exhaust fan and other 350V-420VAC three phase motor and d other equipment A very good choice. 3. Built-in rechargeable battery, power off memory. No need to reset the program, its convenient. 4. After repurchasing the device, set the time and use the 380V directly after plugging in the cable. Note: 1. Due to the difference between monitors and lighting effects, the pictures may not reflect the actual color of the item. 2. Please allow slight error due to manual measurement. Thank you for your understanding.