Features: 1. Perforated, isolated, and non-destructive measurements.2. Positive and negative bidirectional current measurement.3. Integrated voltage and current, anti reverse connection protection, anti reverse connection without burning.4. Efficient and stable performance, long working life.5. Small size, simple and convenient to use, with a wide range of applications.Specifications:Current range: 50A 400A 200A 100ACurrent resolution: 0.1ACurrent error: 1%Power supply voltage range: DC5-100VVoltage measurement input range: DC0-300VVoltage resolution: 0.1VVoltage error: 1%Installation slot size: 45.5 x 26mmSensor perforation diameter: 20mmHeader size: 48 x 29 x 23mmMaterial: ABScolour: BlackPackage Contents:1 x Ampere voltmeter1 x Diverter1 x Connection cable1 x Power cordOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +- 1-3cm.