Features:_x000D_ _x000D_ Multi-functional digital-display meter can measure the AC voltage and current, active power, apparent power and power factor at the same time. _x000D_ Adopting high strength fire retardant material, safe and reliable. _x000D_ High measurement accuracy, stable performance. _x000D_ Compact size and sturdy structure, easy installation. _x000D_ No external AC transformer is required for measuring current within 99.9A. _x000D_ Simply pass the wire of the measuring loop through the small round hole on the right side of the meter to complete the measurement. _x000D_ _x000D_ Specification:_x000D_ Measurement voltage: AC80-300V, AC200-450V (Optional)_x000D_ Measuring current: AC100A (additional transformer is required if it is greater than 100A)_x000D_ Power supply: no power supply is required_x000D_ Measurement accuracy: 0.5%_x000D_ Overall dimensions: 54 * 80 * 64mm / 2.1 * 3.1 * 2.5in _x000D_ Installation: 35mm din rail installation_x000D_ Package List: 1* Multi-Functional Meter_x000D_ _x000D_ _x000D_ _x000D_ Note:_x000D_ New-style and old-style are shipped randomly