Dont use more electricity than necessary Reduce your electricity bill and protect the environment at the same time. Specifications: Material: ABS (flame retardant) Color white Weight: 120g Size: 7.2 cm x 6.3 cm x 10.8 cm Operating voltage: 230 Vac / 50Hz Operating current: MAX 16A Wide voltage range: 200Vac ~ 276Vac Voltage accuracy: 2% Power display range: 0 ,1W ~ 3680W Power accuracy: 2% Total KWh display: 0.000KWH ~ 9999KWH Total cost display: 0.00 ~ 9999 Price display range: 00.00 ~ 99.99 How to use the MODE 1.Press MODE for 3 seconds to enter electric cost /KWH setting. (Power Voltage Cumulative Electric Amount KWH Cumulative Electric Cost Electric Cost /KWH Power) 2. Press UP to adjust. 3. Press MODE to select the next number. 4. Long press MODE to exit the settings (All real-time data will be updated at 1S per once) After 10 seconds, it will automatically return to the interface without any button press. Package include: 2 x Energy Meter Note: 1.Do not connect two or more energy meters together 2.To clear the internal data of the device, please only press the RESET button 3. The product is no battery inside, the cost setting needs to be done when power on