1、The large LCD display does not require an external power supply, can directly display the year, month, day, week, and time, the ON/OFF can be set arbitrarily for 24 hours a day or a week 2、Simple four‑key operation instruct the user to input the required settings in a dialogue mode, no need to read the complicated program setting instructions repeatedly, as long as the operation is once, it is proficient 3、Manual ON/OFF is the output state (one‑time effective) function, and the permanent ON/OFF (permanent effective) function allows users to easily change the output ON/OFF state without changing the setting program in a special and temporary manner 4、Up to 44 programs can be set in 24 hours or a week, and the minimum setting time interval is 1 minute 5、The state of the contact cannot be changed, but the control program switches normally. In the case of no external power supply, the lithium battery stored in the timer can also maintain the timer for about four years.