AstroAI CM4K0R True RMS Digital Clamp Meter 4000 Counts AC DC Current Voltage Capacitance Frequency NCV Tester

The AstroAI CM4K0R Digital Clamp Meter is a versatile 4000-count True RMS electrical testing instrument designed for electricians, technicians, automotive users, maintenance professionals, and DIY applications. It measures AC/DC voltage up to 600V and AC/DC current up to 400A, making it suitable for a wide range of electrical troubleshooting tasks. Unlike lower-spec clamp meters that measure only AC current, the CM4K0R supports both AC and DC current measurement through the clamp. The meter also supports resistance, capacitance, frequency, duty cycle, continuity, and diode testing. Its built-in Non-Contact Voltage NCV detection and live-wire test help identify energized conductors, while the Zero function helps reduce measurement errors caused by the Earth’s magnetic field during DC current testing. Additional features include a backlit LCD display, built-in flashlight, Max/Min recording, sound and light alarms, and automatic ranging. The CM4K0R is rated CAT III 600V and is suitable for commercial, household, automotive, workshop, and field maintenance applications. Key Features: • 4000-count True RMS digital clamp meter • Auto-ranging operation • Measures AC current up to 400A • Measures DC current up to 400A • Measures AC voltage up to 600V • Measures DC voltage up to 600V • Resistance measurement function • Capacitance measurement function • Frequency measurement function • Duty cycle measurement • Non-Contact Voltage NCV detection • Live-wire detection function • Audible continuity testing • Diode testing function • Zero function for improved DC current accuracy • Max/Min measurement function • Backlit LCD display • Built-in flashlight • Sound and light voltage alarm • CAT III 600V safety rating • Powered by 2 x AAA batteries • Suitable for electrical, automotive, maintenance, workshop, and DIY applications