About this item Advanced Preset Function: Programmable digital DIN track timer switch allows advanced preset one week in advance, with universal digital electronic switch for daily and weekly schedules, minute settings. Flexible ProgrammingThe relay's LCD display is programmable, it can display hours or minutes and ON or AUTO or OFF in real time, and can switch on and automatically turn off various electrical equipment according to the time set by the user. Wide Application: Control objects can be street lights, neon lights, billboards, production equipment , radio and television equipment and other electrical equipment and household appliances that need to be turned on and off regularly. Super anti-interference ability The timer is equipped with a built-in rechargeable series battery of 1.2V or 40mA and industrial-grade chip, which has high precision and strong anti-interference ability.