The Testo 770-3 Premium Kit is a solid choice for any tradie needing to accurately measure electrical parameters, especially in tight or crowded panels. This TRMS clamp meter makes non-contact measurements easy and reliable, giving you confidence in your readings.

From fault finding on a busy commercial refrigeration unit to checking power draw on a residential split system, this kit handles it. I've been in plenty of tight spots where that retractable pincer arm makes all the difference for a quick, safe grab.

Best For

• HVAC service technicians
• Refrigeration mechanics
• Electrical installers and troubleshooters
• Industrial maintenance teams

Compatibility

This meter is designed for a broad range of electrical systems, handling up to 1000V AC/DC. It connects seamlessly via Bluetooth to the Testo Smart App (requires iOS 11.0+ or Android 6.0+) and other compatible Testo measuring instruments for data logging and reporting. If you're running a different model, check fittings and specs before ordering.

Features

• Retractable Pincer Arm: Allows for secure, non-contact measurements on tightly packed cables, reducing hassle and improving safety.
• TRMS Measurement: Provides accurate readings on non-linear loads common in modern electrical systems.
• Enhanced Resolution: Delivers precise results, even when working with lower current ranges.
• Auto AC/DC & Parameter Detection: Simplifies operation by automatically identifying and selecting correct measurement parameters like resistance, continuity, diode, and capacitance.
• Bluetooth Connectivity: Pair with the Testo Smart App for real-time data display, graphical trend analysis, saving readings, and generating reports.
• Multifunction Measurement: Handles starting current, active/reactive/apparent power, μA, and temperature with the included Type K thermocouple adapter.

Technical Specifications

What's in the Box

• Testo 770-3 Clamp Meter with Bluetooth
• Standard measuring cables (angled plug, tip Ø 2 mm, 1225 mm length)
• Crocodile clips (CAT IV 600V / CAT III 1000V)
• Micro clips (CAT IV 600V / CAT III 1000V, max 3A)
• Adapter for Type K thermocouples
• Magnetic suspension system
• Transport bag
• 3 x AAA batteries
• Test report

Using It on the Job

1. Always isolate power and use appropriate lockout/tagout procedures before working on live electrical systems.
2. Select the correct measurement function, or let the auto-detection feature assist you for common parameters.
3. Utilise the retractable pincer arm for easy and safe current measurements, especially when cables are tightly packed.
4. Connect the meter to the Testo Smart App via Bluetooth to log readings, view measurement curves, and generate reports on your mobile device.
5. For temperature checks, attach a Type K thermocouple to the included adapter and place it on the surface or in the air as needed.
6. After use, clean the meter with a damp cloth and store all components in the transport bag to protect them from dust and damage on site.

Limitations & Safety Notes

• Always adhere to local electrical safety standards and Safe Work Australia guidelines.
• Do not exceed the specified CAT IV 600V or CAT III 1000V overvoltage category ratings to prevent injury or damage to the meter.
• Regularly inspect test leads and accessories for any signs of wear or damage before each use.
• Only use this meter on electrical systems within its specified measurement ranges and compatible environments.

Tradie Pro Tip

When you're dealing with old, brittle wiring in a packed switchboard, that retractable pincer arm on the 770-3 is a game changer for getting a solid, safe reading without disturbing anything else. Make use of the magnetic holder too, keeps your hands free when needed.

Pair With

Pair your Testo 770-3 kit with Testo smart probes, quality electrical safety gloves, and insulation testers for a comprehensive electrical diagnostics setup.