[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 4 kW, thus avoiding connecting the contactor. [Widely Application] - This programmable time relay is widely used in 350v-420vAC three-phase motors and other equipment such as water pump, fish pond oxygenation, rice steam machine, water heater, panel d display, neon lamp, 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 relay is widely used in 350v-420vAC three-phase motors and other equipment such as water pump, fish pond oxygenation, rice steam machine, water heater, panel d display, neon lamp, fan on. [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 4 kW, thus avoiding connecting the contactor.Features: 1. High-performance stable three-phase timer switch, three-line fire-proof input, three-line fire-proof output, eliminates the inconvenience of some customers who hinder the connection of the zero line without the zero line, the maximum power reaching 4 kW on contactor. 2. Widely used in water pump, fish pond aerator, rice bowl, water heater, billboard, neon light, exhaust fan and other 350V-420VAC three-phase motor and other equipment A very good choice. 3. Built-in rechargeable battery, turn off the memory. No need to reset the program, it"s convenient. 4. Once you have purchased the device, set the time and use 380V directly after plugging in the cable. Specification: Model: DDS528 Rated voltage: 230VAC Rated current: 5-32A Load capacity: 0.05Ib - Imax (direct access type) or 0.02Ib - Imax (transformer access) Data display: LCD display Backlight: no Power indication: green light Electric energy pulse indication: red light (when there is a sampling signal, it lights up for about 80ms) Mounting method: 35mm DIN rail Working environment: -25 - 55, 95 percent RH Size: 78.5x36.5mm/3.09x1.44in Package weight: approx. 131g / 4.6oz Package list: 1 x energy meter 1xbuckle 4 x sealing plug Note: 1. Due to the difference between monitors and light 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.