[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 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, control panel, etc. display, 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, control panel, etc. display, neon light, 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, input three fire lines, output three fire lines, eliminate the inconvenience of some customers 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 other equipment A very good choice.3. Built-in rechargeable battery, power off memory. No need to reset the program, it's convenient.4. After the device is redeemed, set the time and use the 380V directly after plugging in the cable.Specification:Model: DDS528Rated voltage: 230VACRated current: 5-32ALoad capacity: 0.05Ib - Imax (direct access type) or 0.02Ib - Imax (transformer access)Data display: LCD screenBacklight: noPower indication: green lightElectric power pulse indication: red light (when there is a sampling signal, it lights up for about 80ms)Mounting method: 35mm DIN railWorking environment: -25~55, 95% RHSize: 78.5*36.5mm/3.09*1.44inPackage weight: approx. 131g / 4.6ozPackage list:1 * Energy Meter1 * Buckle4 * sealing capNote: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.