Material: ABS and electronic components Size: approx. 98*76*52mm Resistance: 230V-50Hz Maximum load: 16A, 3680W Minimum power display: 0.1W Measurement accuracy: +/-2% or +/-2W (0-100W); +/-2% (100-3250W) Accuracy: +/-2% Minimum power display: 0.01 KWh Cumulative power range: 0.00-9999.9KWh Price setting range: 0.00-9999 Functions: Line power display, displays and stores total collected power, views and saves total service prices, good performance, easy to use, durable. Data display: Press the MODE key, the data display cycles through W-KWh-PRICE-KWH. 1) Plug into a power outlet and turn on the power, the meter displays active power. 2) Press and release the MODE button again to display accumulated KWh. 3) Press and release the MODE button again to display total power. 4) Press and release the MODE button again to display COST-KWH. Price per kWh setting: 1) Press SET key when COST-KWH is displayed, the first digit of COST-KWH flashes, press UP key to set. 2) Press SET button again, the second digit of COST/KWH flashes, press UP button to set. 3) Press SET button again, the third digit of COST/KWH flashes, press UP button to set. 4) Press SET button again, the fourth digit of COST-KWH flashes, press UP button to set. 5) Press SET button again, COST or KWH decimals flash, press UP button to set. Data deletion: Press and hold the MODE button for five seconds to delete KWh, PRICE and COST/KWh data. Note: Do not plug in appliances with loads higher than 16A. Always ensure the device's plug is fully inserted into the meter's jack. To clean the meter, unplug the power plug and wipe with a dry cloth. Please allow 1-5mm size error due to manual measurement. Due to different monitor calibrations, item colors may be slightly different from the pictures. Do not connect two or more instruments together. Color: As shown in the picture.