The battery-operated SPI-MV converter from Singer Valve can run independent of an external power source for an estimated three to five years. It can also be paired with an external AC or DC power source so the battery acts a power backup. A small solar panel can also be added to extend battery life 10 to 15 years. The flowmeter comes in the standard three-key-touch local converter with die-cast aluminum IP67 housing and has variable sampling frequencies that can be adapted to fit installation needs. The unit offers dual totalizer pulse output and internal data logging options that can be used for SCADA integration and flow analysis. 888/764-7858; www.singervalve.com