Functions:
1. Measure real-time voltage of the power supply (90~150V AC or 160~280V AC);
1. Measure real-time voltage of the power supply (90~150V AC or 160~280V AC);
2. Measure real-time operation power of the appliances (0~3000W);
3. Show the power consumption (0~9999kWh);
4. Measure real-time current of the powe supply ( Ampere):
5. Measure the real-time power factor and frequency of the power supply:
4. Measure real-time current of the powe supply ( Ampere):
5. Measure the real-time power factor and frequency of the power supply:
6. Calculate the cost of energy according to the pre-set price of energy (0~$9999); price of energy can be pre-set to the local price by users;
7. Show the operation time of appliances (0~24h~9999d)
