AC 220V-240V Digital LCD Power Programmable Timer Time Switch Relay 16A 03 Key Button:. 1.clock, timer, day, h+(setting the hours), m+(setting the minutes), manual override, reset;. Tips: 2.Before starting the program, the timer should be charged for at least 5 minutes as the inbuild battery may be of no battery. 3.Before setting the program, press the key button reset, to clear the memorize data for the new instructions. 4.After the program is made, please insert the timer to the plug. Then connect the electric appliance to the timer. 5.The on and off can be set eight times each day, which can be set as follow:. First option, Sunday. Second option: from Monday to Friday. Third option: Saturday and Sunday(weekend). Fourth option: from Monday to Saturday(working days). Fifth option: Monday, Wednesday, Friday. Sixth option: Tuesday, Thursday, Saturday. Seventh option: from Monday to Wednesday. Eighth option: from Wednesday to Saturday. 12 hours and 24 hours systems are optional.