1.Solid state design is safer than solenoid testers.2.Low impedance to reduce false readings.3.Indicates voltage without battery.4.Voltage indicated by lights, vibration and tone.5.With continuity beeper and bright work light. 1.固態(tài)設(shè)計,比電磁測試儀安全。2.低阻抗,以減少錯誤的讀數(shù)。3.指示,不帶電池的電壓。4.電壓表示燈,振動和音。5.連續(xù)性蜂鳴器和明亮的工作燈。