Extech EX530A True RMS Industrial Multimeter CAT IV 600V, 40,000 Counts

For HVAC technicians, electricians, and industrial maintenance crews working in demanding environments, the Extech EX530A True RMS Multimeter delivers precise measurements even on noisy, non-sinusoidal signals. Its rugged double-molded housing and CAT IV 600V safety rating make it suitable for both field service and bench work.

Key specifications

• 40,000 count display with backlight
• True RMS AC voltage and current
• Safety rating: CAT IV 600V, CAT III 1000V
• DC voltage: 0.1mV to 1000V
• AC voltage: 0.1mV to 1000V
• DC current: 0.1µA to 10A
• AC current: 0.1µA to 10A
• Resistance: 0.1Ω to 40MΩ
• Capacitance: 0.01nF to 40mF
• Frequency: 0.001Hz to 400MHz
• Temperature: -50 to 1000°C via Type K thermocouple
• Low impedance (LoZ), low pass filter (LPF), non-contact voltage (NCV)
• Min/Max/Average, Peak Hold, Data Hold
• Diode test and continuity with beeper
• Auto-ranging, 9V battery powered

Why choose it

The EX530A combines high accuracy (±0.1% basic DC voltage) with advanced troubleshooting features. LoZ mode eliminates ghost voltages, LPF filters out inverter noise, and NCV quickly detects live wires. Its 40,000 count resolution reveals small signal changes that lesser meters miss.

Ideal use cases

• Industrial electrical maintenance
• HVAC system diagnostics
• Variable frequency drive (VFD) testing
• Field service and commissioning

Good to know

The meter supports optional PC connectivity via USB for data logging and analysis. It runs on a single 9V battery and includes a backlit display for low-light work.