Your electricity is measured in increments of kilo-watt-hours which reflects the number of watts in thousands that you use in one hour. The meter measures the number of kilo-watt-hours of electricity you use each month to power your heating or air conditioning unit, your water heater, electric stove, refrigerator, freezer, television, lights, and other appliances.
Meters are read in one of two ways: By meter readers that visit the meter once a month or automatically by electronically reading the meter
The new meters also would eliminate the need for human meter readers and provide the utility with more immediate power-grid information, potentially reducing the likelihood or the duration of outages.

Digital pHep4 Tester - pH Calibration Kit - Replacement Electrode
Product Features
pH Range: 0.0 to 14.0 Accuracy: 0.1 pH
Temperature Range: 0.0 to 60.0°C/32.0 to 140.0°F
For use with Digital pH Tester and Digital Combo pH/TDS/Temperature Tester
Product Description
The completely waterproof, floating pHep4 Pocket pH Tester features an easy-to-read LCD display and a rugged replaceable pH electrode cartridge. Features automatic temperature compensation for more reliable readings and automatic shutoff after 8 minutes