Technical specifications: Operating voltage: 230V, 50 Hz Operating current: max.16A Large voltage range: 150V - 230V Time display range: 0 second --- 9999 days. Display wattage (watts): 0v --- 9999W Voltage display range: 0v --- 9999V Current display (ampere): 0.000A ---- 16.000A Frequency display: OHZ - 9999Hz Minimum wattage display range: 0.0W ---- 9999w Maximum wattage display range: 0.0W --- -9999w Features Reset If faults appear on the display or the buttons no longer respond, the device must be reset. The reset is done by preing the RESET button. Display mode The screen is displayed for approx. 1 minute - afterwards it automatically changes to mode 1 To change from one mode to the other, pre the FUNCTION button, Mode 1: In this mode the following is displayed: time / watt 1 costs / display time (how long) the device is connected to a power source. Mode 2: In this mode the following is displayed: Time / Energy accumulation / Display time (how long) this device is connected to a power source. Overload Display: If the instrument is plugged into an outlet that has over 3680 W, it can cause an overload. This proce is indicated by the term in OVERLAOD in the 2nd section t with a booming signal (selectable function) Settings mode Electricity pricing After a long pre of the COST button for more than 3 seconds (the system standards are displayed in the third line of the LCD display, e.g. 0.0OCOST 1 KWH), the displayed content begins to move up and down, which means that the device is back in setting mode. Then pre the Function key to change the selection. To change the display as desired, you can pre the DOWN / UP keys. Preing once will increase or decrease the decimal point accordingly and hold, the decimal point is slowly increased or decreased in 2 seconds.