The OWON CM2100 Series is a compact 20,000-count True RMS clamp meter for measuring AC/DC current, AC/DC voltage and other common electrical parameters. Its small 17mm jaw and 0.2kg body make it practical for electrical installation, industrial maintenance, HVAC service and troubleshooting in confined equipment spaces.
True RMS measurement, VFC filtering and a 40Hz–1000Hz AC frequency response support measurements on conventional electrical systems, inverter outputs and variable-frequency equipment. NCV detection, input protection and CAT III 1000V/CAT IV 600V safety ratings provide a measurement platform suited to professional field work.
Key Features
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20,000-count True RMS measurement: Obtain detailed readings from sinusoidal and non-linear electrical signals.
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AC/DC current up to 100A: Measure current without disconnecting the conductor or opening the circuit.
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AC/DC voltage up to 600V: Perform routine voltage checks across residential, commercial and industrial electrical systems.
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VFC measurement mode: Filter high-frequency interference for more stable readings on inverters, motor drives and variable-frequency systems.
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40Hz–1000Hz AC response: Measure signals across a wider frequency range than a basic mains-frequency clamp meter.
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Non-contact voltage detection: Identify the presence of AC voltage before beginning direct electrical measurements.
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Automatic ranging: Reduce manual range selection when moving between different measurement levels.
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Additional multimeter functions: Measure resistance, capacitance, frequency, duty cycle, diodes and continuity from the same instrument.
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Zero and relative measurements: Compensate for offsets and compare measurement changes during troubleshooting.
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CAT III 1000V and CAT IV 600V safety: Support professional measurement work in fixed installations and at the source of low-voltage systems.
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Compact 17mm clamp jaw: Reach individual conductors in crowded panels and compact equipment assemblies.
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Portable battery operation: The meter weighs approximately 0.2kg and operates from two AAA batteries for convenient field use.
Model Differences & Selection
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CM2100: Provides the complete 20,000-count True RMS measurement platform, including AC/DC current, AC/DC voltage, NCV and VFC. Choose this model for local measurements when wireless monitoring and recorded app data are not required.
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CM2100B: Adds Bluetooth communication with Android and iOS devices for remote data viewing, instrument control, measurement recording, trend analysis and data sharing. Choose this model for extended monitoring, documentation, collaborative troubleshooting or measurements where the display cannot be observed conveniently.
Both models provide the same core electrical measurement ranges, True RMS capability, VFC mode, NCV detection and compact clamp design. The purchasing decision therefore depends primarily on whether Bluetooth monitoring, mobile control and app-based data recording are required.
Applications
- Electrical installation and circuit troubleshooting
- Industrial equipment maintenance
- HVAC system inspection and servicing
- Inverter and variable-frequency drive measurements
- Motor and control-system current checks
- Residential and commercial electrical maintenance
- Remote monitoring and measurement documentation with CM2100B
Why Choose the OWON CM2100 Series?
The CM2100 Series combines detailed True RMS readings, AC/DC current measurement and practical troubleshooting functions in a compact instrument. Its VFC mode supports work around frequency converters, while NCV detection and professional safety ratings address everyday electrical inspection requirements. The CM2100B extends the same measurement platform with mobile monitoring and data-management functions for connected maintenance workflows.
