The Mastech MS2001 is a clamp meter manufactured by Mastech, a well-known company that produces a wide range of electrical and electronic testing and measurement equipment. The MS2001 is a digital clamp meter designed for various electrical measurement tasks. Here are some key features and specifications of the Mastech CLAMP METRE MS2001:

1. Current Measurement: The MS2001 is primarily used for measuring alternating current (AC) and direct current (DC) in electrical circuits. It allows for non-contact current measurement by clamping around a conductor.
2. Digital Display: It features a clear digital LCD display that shows the current reading, making it easy to read and interpret measurements accurately.
3. Voltage Measurement: In addition to current measurement, the MS2001 can measure AC and DC voltage, making it a versatile tool for electrical troubleshooting and testing.
4. Resistance Measurement: It can also measure resistance, which is useful for checking the continuity of wires and components.
5. Additional Functions: The MS2001 may offer additional functions such as frequency measurement, diode testing, and capacitance measurement, adding to its versatility.
6. Data Hold: Some models of this clamp meter may have a data hold function that allows you to freeze the displayed measurement for easy recording.
7. Auto-ranging: It typically supports auto-ranging, which means the meter automatically selects the appropriate measurement range, simplifying the measurement process.
8. Safety: The MS2001 is designed with safety in mind and often comes with features like overload protection, a protective holster, and non-contact voltage detection.
9. Battery Power: It is typically powered by standard batteries, such as 9V or AAA batteries, which are readily available.
10. Applications: The MS2001 is suitable for various electrical applications, including residential and industrial troubleshooting, installation, and maintenance.