1、Monitor electricity usage, voltage, current and electricity cost in real time 2、Support electricity price setting, help you to reduce the power bill and carbon emissions. 3、With alarm functions include overload alarm, electricity usage alarm, cost alarm, indicated by LED lights. 4、LCD display for easy and clear reading. 5、High accuracy and strong anti-interference. Features: Monitor electricity usage, voltage, current and electricity cost in real time. Support electricity price setting, help you to reduce the power bill and carbon emissions. With alarm functions include overload alarm, electricity usage alarm, cost alarm, indicated by LED lights. LCD display for easy and clear reading. High accuracy and strong anti-interference. Specification: Plug type: UK plug Rated voltage: 200~250V Voltage display range: 200VAC - 2500VAC Time display range: 0 second to 9999 days Power display range: 0.0W to 9999W Voltage display range: 0.0V-9999V Current display range: 0.000A to 9999A Frequency display range: OHz - 9999Hz Cumulative power consumption: 0.000KWH to 9999KWH Price range: 0.00COST/KWH to 99.99COST/KWH Total electricity charge display range: 0.00COST -9999COST Voltage accuracy: ±1 Current accuracy: ±2 Power accuracy: ±2 Product Size: 120*60*40mm/ 4.7* 2.4* 1.6in (not include the plug) Package Weight: Approx. 178~190g/ 6.3~ 6.7oz   Package list: 1 * Socket 1 * User Manual