Medidor de voltaje

Functions:
★ Measure real-time voltage of the power supply (90~280 v ac);
★ Measure real-time operation power of the appliances (0~9999w);
★ Show the power consumption (0~9999kWh);
★ Calculate the cost of electricity according to the pre-set price of electricity (0~$9999); price of electricity can be pre-set to the local price by users;
★ Operation condition monitor: the led indicator will flicker the real-time running power is over the preset standby power for a period of time (=1 hour x the pre-set ratio of operation condition; accumulated time in an hour)
★ Show the operation time of appliances (0~24h~9999d)