Intelligent, micro-processor control, charge testing auto conversion Features:1. Intelligent, micro-processor control, charge testing auto conversion.2. Minimum resolution of current up to 1nA, zeroing by button pressing.3. Locking function of test current value, strong anti-interference ability.Specifications:1. Test Voltage: 1.00V to 500V, 1.00V to 800V, 1.00V to 1000V. 3 ranges adjustable, and ...