So, talking about PLM which is direct replacement of MOV(metal oxide varistor)and GDT(gas discharge tube) What is PLM? PLM is power line module Application in consumer electronics, LED driver , power supply, SMPS etc.. This is advanced technology as compared to MOV(metal oxide varistor) and GDT(gas discharge tube) How is it advanced from MOV and GDT? 1-Low clamping voltage (30% lower than MOV) 2-No thermal runaway 3-Virtually no leakage current at steady state operating conditions 4-Extremly low capacitance (<2PF) 5-High insulation resistance 6-Stability against repeated surge 7-UL 1449 approved 8-LONG LIFE We highly recommend PLM to those who want their product to be superior and hasel free. because due to India's unstable power flactuation people face high surges problem this leads to failure of products.This module can reduce a failure ratio by 60%. Refer graph for your reference in attach photo.