Features Four leads measurement method, high accuracy Switching current source, smoothing filter, low ripple Wide measuring range, up to 20m|¸ Two 31/2 LED windows to display current and resistance Over-current and Over-heat protection Specifications (English version available) Power supply: AC 220V¡¡¡ì¡¨¨ 20%, 50Hz¡¡¡ì¡¨¨ 1 Testing current: DC 5 to 100A Ripple ratio: 3% @ 100A Measuring range: 0 to 1.999m|¸ /19.99m|¸, switchable Resolution: 1|¡¡ì¬ |¸ /10|¡¡ì¬ |¸ Accuracy: 0.5% Ambient temperature: -5 to 40o C Ambient humidity: RH< 85% Dimension: 35¡¡¡ì¡¨¦ 24¡¡¡ì¡¨¦ 22cm Weight: 6kg Test-leads length: 5m.