Description:  1.This device is a plug- in timer switch designed tocontrol the electric power to household appliances to save energy.  2.It has a built-in battery to operate the clock and help you set the timer.  3.Before operation, please plug the unit into an outlet to recharge for about 5~10 minutes if the device is out of charge and showsnothing on the display.  4.12/24 Hour System；Up to 10 Times On/Off Setting.  5.Standard Time ;Support 24 Hours/7 Days Setting.  6. Built-in Backup Battery.  7.Complete Silent Without Noise.    Specifications:   Dimension(approx.):13.5cm x 7.5cm x 6cm;  Large LCD Display;  LCD size(approx.):34*49mm;  Plug type:EU/AU/BR/UK/US Plug;  Voltage:230V 50Hz;  Installation:Plug-in TypeRating:230V～AC / 16A /3680W;  Setting Time:1 Minute;  Operating Temperatures:-10~+40°C;  Accuracy:1 Minute;  Battery:Nimh 1.2V(battery is built-in, non-removable);  Work life >100 hours;    Timing set:   Press 'WEEK' key to choose the days group you wish to switch-on the appliance. There are 10 groups:  MO TU WE TH FR SA SU→MO→TU→WE→TH→FR→SA→SU→MO TU WE TH FR→SA SU→MO TU WE TH FR SA→MO WE FR→TU TH SA →MO TU WE→TH FR SA→MO WE FR SU:  Press 'HOUR' key once from '0'~'23' or '1' ~'12'.  Press 'Minute' key once from '00'~'59'.  Be sure to press the 'RESET/RECALL' key to reset or cancel all systems.    Package lncludes:  1* Digital Timer Socket