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 1Multi-functional digital-display meter can measure the AC voltage and current, active power, apparent power and power factor at the same time. 2Adopting high strength fire retardant material, safe and reliable. 3High measurement accuracy, stable performance. 4Compact size and sturdy structure, easy installation. 5No external AC transformer is required for measuring current within 99.9A.