Brennenstuhl 1506603 primera line wattage and current meter pm 231 e gb brennenstuhl 1506603 this primera line wattage and current meter pm 231 e gb from brennenstuhl has been designed to measure voltage frequency current efficiency factor and power output helping to save costs and energy measurements can be given in hours and minutes while the calculation of the entire energy consumption and energy costs can also be performed brennenstuhl 1506603 primera line wattage and current meter