COVID-19 News: Open for Business
All Testo Products

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

£122.40 £102.00
Free UK Delivery* Delivery Options

UK - Zone 1 Orders

England, Wales & most of Scotland.

Free 3-5 Working Day1
Orders Over £99 & Selected Items

Economy 2-3 Working Day1
From £1.95

Tracked 2-3 Working Day

Express Next Working Day

Priority Next Working Day
£14.95 (Pre-Noon)
£19.95 (Pre-10:30am)

Saturday & Sunday
£14.95 (Pre-Noon)

UK - Zone 2 Orders

Highlands, Islands & Northern Ireland.

Free 3-5 Working Day1
Selected Items (Calculated at Checkout)

Economy 2-3 Working Day2
From £1.95

Tracked 2-3 Working Day

International Orders

Delivery is calculated at checkout.

Note: Next day delivery is not guaranteed for orders placed after 3:00pm. Prices Ex VAT.

1, 2 See delivery page for more details.

Price Match Guarantee & Advice

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 770-2 Clamp Meter 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
  • Tead Leads

Optional Accessories

  • 0590 0008 - Set of Safety Alligator Clips
  • 0590 0009 - Set of Standard Alligator Clips
  • 0590 0011 - Standard 4ft Pin Tip Leads (with Right Angle Plug)
  • 0590 0012 - Standard 4ft Pin Tip Leads (with Straight Plug)
  • 0590 0013 - Standard 6ft Pin Tip Leads (with Right Angle Plug)
  • 0590 0014 - Standard 6ft Pin Tip Leads (with Straight Plug)
  • 0590 0017 - Testo 775/Testo 770 Carrying Case
Part Code0590 7702

Testo 770 Series Technical Specifications

Model Number770-1770-2770-3
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
1 Reviews
Overall Rating

Write a Review

Write Your Own Review
You're reviewing:Testo 770-2 True RMS Hook Clamp Meter - AC/DC
Your Rating

Subscribe to our Newsletter

International Enquiry