Testo 770-3 True RMS Clamp Meter for HVAC

The Testo 770-3 is a True RMS clamp meter with a cable-grab jaw design built for demanding measurements in tight application environments — the kind of confined switchboards, condenser units and control panels that HVAC technicians work in daily. The slim jaw profile reaches conductors where standard clamp meters cannot, without sacrificing measurement accuracy.

Bluetooth connectivity enables wireless data logging to the Testo Smart App for on-site documentation. Non-contact voltage (NCV) detection adds a fast safety check before probing live circuits. See all electrical testing tools or browse the full test and measurement range at HVAC Shop AU.

Key Features

• Cable-grab jaw — accesses conductors in tight, confined spaces
• True RMS — accurate readings on variable loads and non-linear signals
• Bluetooth data logging — wireless transfer to Testo Smart App
• Non-contact voltage (NCV) detection for fast safety checks
• Type K thermocouple input for temperature measurement
• Measures AC/DC current and voltage, resistance, continuity, capacitance and frequency
• Large backlit display
• Auto power-off (APO)

What’s Included

• Testo 770-3 clamp meter
• Test leads
• Type K thermocouple
• Batteries
• Instruction manual