PCB for the billing meter Micro-chip control Buzzer alarms SMT technics Design PCB and assembly service   Product Overview: Microprocessor structure, Stable performance  ,it will not affected by overload capacity ,LCD automatically  controlled by Microcomputer and thus wil be more convenient to observe and operate With function of control cheating phenomenon (such as less calculate ,missing calculate and erroneous calculate) to the minimum. Technical parametersAlternating current:200v-240vCurrent:0.06A-18APower:0-4000W Main function  Clock Timing 12/24 systerm Display voltage,current,power,time consumption ,power consumption ,cost.Set unit price separately at peak and valley  Main features:1,  Mode in a single system has always been in accordance with the standard billing rate.total cost= standard billing rate * total power consumption2,  Dual-mode system   Set the price of a special time for the start and termination.   total cost= standard billing rate * Standard power consumption + special billing rate * specail power consumption