Technology Research 21550T 400A AC/DC True RMS Clamp Meter with NCV Tester

The Technology Research 21550T is a professional-grade digital clamp meter designed for electricians and technicians who need accurate measurements in both AC and DC applications. This versatile meter features True RMS accuracy for precise readings on non-linear loads, making it ideal for troubleshooting modern electrical systems with variable frequency drives and electronic ballasts.

Key Features:

• 400A AC/DC current measurement range with 0.1A resolution
• True RMS accuracy for reliable readings on distorted waveforms
• Built-in non-contact voltage (NCV) detector for safe voltage identification
• CAT III 600V safety rating for professional electrical work
• 9 measurement functions: AC/DC current, AC/DC voltage, resistance, capacitance, continuity, temperature, and diode testing
• 1.2-inch jaw opening accommodates larger conductors
• REL (relative) and max/min functions for comparative measurements
• Third-hand test probe holder clips to the back of the meter for convenient one-handed operation
• Built-in LED worklight for visibility in dimly lit panels and tight spaces
• Rugged construction guaranteed to survive a 6-foot drop
• Digital LCD display with clear, easy-to-read numbers

Technical Specifications:

• Current Range: 0.01 to 400A AC/DC
• Voltage Range: 100mV to 600V AC, 0.1mV to 600V DC
• Resistance: 0.1Ω to 40MΩ
• Capacitance: 10pF to 100µF
• Temperature Range: -40°F to 1400°F
• Frequency: 0.01 to 10MHz
• Bandwidth: 50 to 400Hz
• Operating Temperature: 32°F to 104°F
• Auto power-off after 15 minutes of inactivity
• Power: Three AAA batteries (included)

What's Included: Clamp meter, carrying case, test leads, Type K temperature probe with banana plug adapter, three AAA batteries, and instruction manual.

This clamp meter is perfect for automotive electrical diagnostics, marine systems troubleshooting, RV electrical maintenance, and powersports applications where both AC and DC current measurement capabilities are essential.