... -hour meter, it adopt micro-electronics technique, and imported large scale integrate circuit, use advanced technique of digital and SMT techniques ... . 2. 18mm width , complying with standard DIN43880. 3. May select 5+1 digits display (99999.1kWh) and 6+1 digits display ... when no power , complying with standard DIN43864. DEM015SS Single Phase 5(32A) DIN-rail Kilowatt Hour kwh Energy Meter