Lightning Protection Component (SPD) TesterApplied to testing the performance parameters of the lightning protection elements such as metal oxide varistor(MOV) and gas discharge tube (GDT) and the insulation resistance (Mohm) , polarization index (PI), dielectric absorption ratio (DAR). 1. Model No.:ETCR3800A 2. Test Mode: DC power drop method 3. MOA Range: 50~3000V; 0~1000μA 4. GDT Range: 50~3000V 5. Insulation Resistance Range: 500~2500V; 0.5MΩ~10GΩ 6. Power Supply : DC 7.4V 2600mAH rechargeable lithium battery