Semiconductor Devices Characteristics Digital Meters is an SSI India product in the BASIC ELECTRONICS LAB category. Key specifications include SKU: PBE-E336. TECHNICAL SPECIFICATIONS Power supplies. DC Supply IC Regulated 0-3V/45V DC, 150mA. Operated on Mains power 230V, 50Hz +10% Digital Meters. Zener Diode 6.2V and 8.2V. Voltage Control through Potentiometer.