This electronic timer device simply interrupt the power source(220volt ac)supplying the appliance connected to its output(220volt ac)it simply acts as a simple switch(relay inside)which disconnect its voltage source to the appliance(load)which is timed according to settings made,this setting could be achieved by an 2batch of 8 switches,one for the ON interval and one for the OFF interval.This 8 switches ranges from 36sec to 24hour.Advantage of using this unit is electric bill is reduced especially when connected to electric fan,lighting,lampshade,water heater 2000watts max.,etc.; This unit is specially made for laptop to manage its battery,since all rechargeable battery needs to be charge and discharge frequently to keep it in good working power condition,this unit again simply interrupt the power supplying the laptop adaptor,thus forcing the battery to supply power to the laptop at pre -define time according to setting made from the swictches which has a corrsponding time,this time setting could be found at the front of the unit arrange in column with its designated time interval,after the time had elapse,power resume,charging then takes place thus cycle continuous according to setting made,for further explanation e mail me at trex_lipad@yahoo.com
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