It is designed for DIN rail mounting and can be programmed for up to 20 different ON/OFF cycles per day.The device has a battery backup to maintain settings during power outages.
A timer switch operates an electric switch controlled by the timing mechanism. This Timer gives you programmable time from 1 minute up to 168 hours giving you a maximum time of up to a week, allowing you to set up a timer for every day of the week if need dictated