1:Precise measurement on forward and reverse quarand-hoase and max,demand. 2:Precise measurement on each phase voltage,current,active and reacive watt. 3: 4 tarrif and 12 time of use to be set per day,12 ranges and 4 seats of tarriff for flexible and adaptive use per day . 4:Launching automatically by the designated date and store the date of last and seconde last month ,Meanwhile ,max, memand of current month reasets to zero either automatically or manually. 5:1-2 day in a week to be set as weekend and converted into specific ate as required . 6:Records to be kept and to display values in terms odf voltage loss, power of, parameters,battery life and the states of paremeters in use 7:Infrared remote progtamming .reading and non -accessible date inter change