Testo 770-2 True RMS Hook Clamp Meter – AC/DC


£146.00 / £175.20 incl VAT

⚡ Easy to operate thanks to the fully retractable pincer arm
⚡ Auto AC/DC and large two-line display
⚡ Improved TRMS method
⚡ Bluetooth connection to your smartphone (with the testo Smart App)

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Testo 770-2 True RMS Hook Clamp Meter – AC/DC

Product Description:

Uniquely designed to make clamping into difficult applications as simple as possible, the Testo 770-2 is an excellent choice for any professional electrician.

The 770-2 is the upgraded version of Testo’s 770-1 clamp meter. The main difference between the two is the 770-2 includes a μA current measurement mode plus the ability to measure temperature via the use of a type K thermocouple.

Unlike other clamp meters on the market, the Testo 770-2 doesn’t have standard jaws which open like a clamp. Instead, one side of the jaws snaps downwards, leaving you with a hook to slide around a wire. Once done, let go of the trigger and the side of the jaws will snap into place, completing the clamp. This makes it significantly easier to loop around smaller wires and connect in difficult applications, allowing you to work much more efficiently.

The Testo 770-2 includes a full suite of electrical measurement functions. It can test AC/DC current from 0.1 to 400A, voltage from 1mV to 600V (AC/DC) and also tests resistance, μA current, frequency, capacitance, temperature, continuity and diode.

To ensure accuracy when testing on irregular waveforms the Testo 770-2 is true RMS and always produces reliable results.

Testo part number: 0590 7702

  • The three instruments in the testo 770 clamp meter family are ideally suited for current measurement in switching cabinets. One of the two pincer arms can be fully retracted into the instrument. This unique grab mechanism means that cables in tight switching cabinets can be easily grabbed. The automatic measurement parameter detection also ensures reliable work: in the current and voltage area, all three instruments detect direct and alternating current and select other parameters such as resistance, continuity, diode and capacitance automatically.
  • The testo 770-1 model is the standard version for daily measuring tasks, including starting current measurement.
  • The testo 770-2 also has a μA range as well as an integrated temperature adapter for all type K thermocouples.
  • In addition to that, the testo 770-3 includes real-time power measurements (Watts), Power Factor, and Bluetooth. The free Testo Smart App can be used for remote viewing, monitoring, data logging, and creating reports via Bluetooth. The powerful app allows you to create custom reports that include photos, data, and graphs that can be saved or sent via email.

 Key Features:

  • Unique hook design separates and grabs wires without using your hands
  • Retractable section of hook for easy connection
  • Automatically identifies testing in progress and selects correct meter configuration
  • True RMS – accurate even when testing irregular AC waveforms
  • AC/DC voltage measurements from 1mV to 600V
  • AC/DC current measurements from 0.1 to 400A
  • μA measurement range from 0.1 to 400μA (AC/DC
  • Resistance measurements from 0.1Ω to 40MΩ
  • Capacitance measurements from 0.001μF
  • Frequency measurements from 1Hz to 10kHz
  • Temperature testing from -20 to +500°C
  • Continuity and diode tests
  • CAT IV 600V safety rated
  • In-rush (starting) current capture
  • Automatic power off when left idle
  • MIN/MAX function
  • Data hold function
  • Includes 2 year warranty from Testo

What’s Included?

  • Testo 770-2 Clamp Meter
  • Batteries
  • Test Leads

Additional features:

  • True RMS measurement function
  • μA measurement range, integrated temperature adapter for all type K thermocouples.
  • Connects to testo Smart App via bluetooth for performance measurement function and downloadable reports. Also auto-calculates Power/Wattage.

Testo 770 Series Technical Specifications

Model Number 770-1 770-2 770-3
True RMS Yes Yes Yes
Basic Accuracy 0.8% 0.1%
Voltage Measurement Range 1mV to 600V AC/DC
Current Measurement Range 0.1 to 400A AC/DC 0.1 to 600A AC/DC
Power Measurement Yes
μA Measurement Range 0.1 to 400μA AC/DC
Resistance Measurement Range 0.1Ω to 40MΩ 0.1Ω to 60MΩ
Frequency Measurement Range 0.001Hz to 10kHz
Capacitance Measurement Range 0.001μF to 100μF 0.001μF to 60000μF
Temperature Measurement Range -20 to +500°C
Bluetooth and Testo Smart Probes App Yes
Continuity Testing Yes Yes Yes
Diode Testing Yes Yes Yes
Display (Counts) 4000 6000
Measurement Category CAT IV 600V
Operating Temperature -10 to +50°C
Storage Temperature -15 to +60°C
Dimensions 243 x 96 x 43mm (L x W x H)
Weight 378g
Warranty 2 years
Authorisations TUV, CSA, CE
Standards EN 61326-1, EN 61140


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