Specification: Brand new Material: ABS and electronic components Size: about 98*76*52mm Power supply: 230V-50Hz Maximum load: 16A, 3680W Minimum power display: 0.1W Measurement accuracy: +/- 2% or +/- 2W (0-100W); +/- 2% (100-3250W) Performance Accuracy: +/- 2% Minimum power display: 0.01KWh Accumulated power range: 0.00-9999.9KWh Price range: 0.00-9999 Feature: Show line power. Display and storage of the collected total power. Show and save the price of the total service. Fine workmanship and good performance. Easy to handle. Durable in use. Data display: Press the MODE button, the data will be displayed as follows: W-KWh-Price-COST, KWH 1). Plug in the power outlet and turn on the power, the meter will display the active power. 2). Press and release the MODE button again, the meter will display the accumulated KWh. 3). Press and release the MODE button again, the meter will display the total power. 4). Press and release the MODE button again, the meter will display COST-KWH. Fixed price/KWh price: 1). Press SET button when COST-KWH is displayed, the first digit COST-KWH flashes, press UP button to set. 2). Press SET button again and release, the second digit COST/KWH flashes, press UP button to set. 3). Press SET button again and release when COST/KWH flashes for the third time, press UP button to set. 4). Press the SET button again and release when COST-KWH flashes for the fourth time, press the UP button to set. 5). Press SET button again and release, the decimal COST or KWH flashes, press UP button to set. Data Erasure: Press and hold MODE button for five seconds, KWh, PRICE and COST/KWh data will be cleared. Inclusive package: 1x Electric Meter Socket Annotation: Do not connect two or more instruments together Do not plug in devices with a load greater than 16A. Always ensure that the plug of each device is fully inserted into the meter's socket. If you need to clean the meter, please unplug it from the power adapter and wipe the meter with a dry cloth. Please allow 1-5mm size error due to manual measurement. Item color displayed in photos may be showing slightly different on your computer monitor since monitors are not calibrated same. Do not connect two or more instruments together Do not plug in equipment with a load exceeding 16 A. Always make sure that the plug of any device is fully inserted into the socket of the meter. If you need to clean the meter, please unplug it from the power supply and wipe the meter with a dry cloth. Please allow 1-5mm size errors due to manual measurement. Item color displayed in photos may be showing slightly different on your computer monitor since monitors are not calibrated same.