Features: It is made of premium material,durable and has long service life. It is stable and has great performance while using. Professional and practical design with beautiful appearance, easy to carry and use. The meter is an accurate and professional device for measuring sine wave circuit. The CT of the meter is only connected to the CT socket and does not require grounding or equipment housing. Specification: Measuring Accuracy:1%+-2 Digits Screen:0.39'' LED Nixie Tube Screen,Voltage-Red,Current - Green Measuring Speed:2 times/s Size: Approx. 70*40*30mm/2.76*1.57*1.18in Installation Size: Approx. 68*38mm/2.68*1.5in Supply Cord Length: Approx. 150mm/5.91in "Split" Transformer Lead Length:Approx. 100mm/3.94in Voltage Measuring Range:60~500V Voltage Resolution: 1V Current Measuring Range:0~50A Current Resolution: 0.1A( Transformer bore:About 15mm) Extreme Working Condition: Working Temperature:-10~50℃ Working Humidity:10~80%(No condensation) Working Pressure:80~106KPa Sunlight:No direct exposure Package List: 1*Voltage Ampere Meter 1*Mutual Inductor Note: The meter can only be used to measure 50 / 60Hz sine wave circuits.the meter will be damaged while measuring square waves, inverter output and sine wave correction. First connect the current transformer to the meter. Second, connect the meter to the voltage test line. After connecting, do not touch any part of the back of the meter to avoid electric shock. The connection between the voltage input and the current transformer can cause damage to the meter. Make sure the voltage and current transformer are connected correctly. .