Three Phase AC Phase Control Using Antiparallel Thyristor is an SSI India product in the Electrical Lab category. Key specifications include SKU: PEDE-482. TECHNICAL SPECIFICATIONS: Digital Meters: Voltmeter 2000V AC Ammeter 2A AC Power Supplies: Power Supply +15Vat 150mA Isolated Supply 0-415V AT 1A. Operated on Mains power 230V, 50Hz