Elster metering is the new group formed from the acquisition by ruhrgas industries of abb`s global metering businesses. Elster metering is a market leader in electricity and water metering. Meter, model alpha-grid comes with the following features: abt tariff metering enabled; frequency profiling; voltage based reactive measurement and storage; display of voltage percentage; full four quadrant metering; odometric register; time of day metering; measurement of active/reactive/apparent demand; rs232/rs 485 interface available; auxiliary power supply [option]; metering module draw out on power on condition; unique sturdy mechanical design; and reduction of the testing time by using the high resolution test mode.