Seven Segment Dpm Trainer is an SSI India product in the BASIC ELECTRONICS LAB category. Key specifications include SKU: PBE-E952. TECHNICAL SPECIFICATIONS Power supplies. DC Power Supply +0-30V,250mA. AC Power Supply 0-9V,250mA. Operated on Mains power 230V, 50Hz +10% COMPONENTS. 4 Different Load Resistor For Current measurement. 4 Different Ranges