Clamp ammeters referred to as clamp meter. The work is mainly composed of an electromagnetic current meter and bushing type current mutual inductor. Straight through current core made of movable opening, and a clamp on ammeter, named. The utility model relates to a portable instrument which can directly measure the AC current of a circuit without disconnecting the circuit. Features: - - Color: As shown- Material: Plastic, Electronic Parts- Size: 20 - 5x5x2 - 5cm / 8x2x1inch(LxWxH)- Measuring Voltage Range: DC voltage 600V- Model Number: ST201- Weight: 220g- Dimensions: 205 x 5 x 25 mm- DIY Supplies: Electrical- Operating Temperature: 0-50- Measuring Capacitance Range: No- Display Type: Digital Only- Measuring Inductance Range: No- Measuring Resistance Range: 200K- Measuring Current Range: AC current 20-400A- Buzzer Function: Yes- Battery Type: 2 x 1 - 5V (AAA Battery) (Not Included)- Maximum display: 1999 Counts- AC Voltage: 450V- AC Current: 20-200-400A- Resistance(ohm): 200K- Buzzer Function: Yes- Max LCD display: Yes- Data Hold Function: Yes- Battery Type: 2 x 1 - 5V (AAA Battery) (Not Included)- Cable length: Approx - 0 - 8M- Auto Range Clamp Tester Meter Multimeter DMM AC DC Volt Ohm - - Auto Ranging: Yes- Voltage Measurement: Around 10MW- Power: 3V Battery (AAA x 2)(NOT INCLUDED)- It is suitable for school, family and factory - Packing list:1 x Clamp Digital Multimeter 1 x Test leads 1 x User Manual