Features ⚡Timing Function: High-Performance Timing Switch With Three-Wire Input And Three-Wire Output, Helping to Solve The Problem That Some Customers Are Inconvenient to Connect The Neutral Wire. The Maximum Power Reaches 4kw, Eliminating The Trouble of Connecting Contactors. ⚡Cycle Setting: Time Switch Only Needs to Set The on/off Time. There Are 17 on/off Settings. From Monday to Sunday, The Interval of Any Setting Is At Least One Minute, And The Maximum Time Is 168 Hours (Equivalent to 1 Week). Can Be Temporarily Turned on And off Manually. Just Set It Once And It Can Loop Forever. ⚡Installation And Safety: The Timer Is Installed on A 35mm Guide Rail. It Can Be Unattended During Work, Safe And Reliable, And Stable In Performance. It Is A Very Good Choice. ⚡Battery-Powered: The Timer Switch Has A Built-in Rechargeable Battery, And The Power-Off Memory. No Need to Reset The Program, Convenient And Practical. ⚡Scope of Application: Microcomputer Time Controller Is Widely Used in Three-Phase 350v-420v Ac Motors And Water Pumps, Fish Pond Oxygenation, Rice Steamers, Water Heaters, Billboards, Neon Lights, Exhaust Fans And Other Equipment. Features: High-performance timer switch, three Wire input and output three Wire, helping to solve the problem that some customers are not convenient to wire neutral wire.The maximum power reaches 4kW, avoiding the trouble of connecting the contactor Just set the time of ON/OFF,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 time is 168 hours (equal to 1 week), which can be turned on and off manually temporarily. As long as it is set once, it can be permanently cycled 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 performance, is a very good choice. Built-in rechargeable battery, power off memory. No need to reset the program, convenient and practical. Specification: Voltage: 380V/50-60Hz Control output: 16A (three-phase direct output) Setting times: 17ON/OFF (day/week) Set time: 1 minute to 168 hours Travel time error: 1s/24h Power failure memory: more than 180 days (built-in 1.2v rechargeable battery) Installation size: 120*120*52mm/4.7*4.7*2in Installation method: screw , guide rail (35mm) Weight: Approx.467g/16.5oz Package list: 1 x Programmable Time Relay Package List