1. Intelligent, micro-processor control, 2. Charge testing auto conversion 3. Auto charge and discharge 4. Auto gear Features:1. Intelligent, ... resolution of current up to 1nA, zeroing by button pressing.3. Locking function of test current value, strong anti-interference ability ... .00V to 800V, 1.00V to 1000V. 3 ranges adjustable, and accuracy 1% + 3 digits2. Leakage Current Range: 0.1nA to 20 ...